2023 Chevrolet Silverado 1500 Light Truck Vehicle Care User Manual

MY CAR USER MANUAL

Vehicle Care for Your Chevrolet Silverado 1500 Light Truck 2023

Vehicle Care  
333  
special handling may apply. See  
www.dtsc.ca.gov/hazardouswaste/  
perchlorate.  
Appearance Care  
General Information  
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 406  
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 411  
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414  
For service and parts needs, visit your  
dealer. You will receive genuine GM parts  
and GM-trained and supported service  
people.  
Accessories and Modifications  
Adding non-dealer accessories or making  
modifications to the vehicle can affect  
vehicle performance and safety, including  
such things as airbags, braking, stability,  
ride and handling, emissions systems,  
Genuine GM parts have one of these marks:  
aerodynamics, durability, Driver Assistance  
Systems, and electronic systems like antilock  
brakes, traction control, and stability control.  
These accessories or modifications could  
even cause malfunction or damage not  
covered by the vehicle warranty.  
Caution  
When adding accessories or other  
equipment after the purchase of your  
vehicle, ensure you are not exceeding the  
vehicle axle weight ratings or overall  
weight ratings. Overloading the vehicle  
may cause damage. Repairs would not be  
covered by the vehicle warranty. Do not  
overload the vehicle. See Vehicle Load  
Limits 0 204 and Trailer Towing 0 303 for  
those specific weight ratings.  
California Perchlorate Materials  
Requirements  
Certain types of automotive applications,  
such as airbag initiators, seat belt  
pretensioners, and lithium batteries  
contained in electronic keys, may contain  
perchlorate materials. Perchlorate Material –  
334  
Vehicle Care  
Damage to suspension components caused  
by modifying vehicle height outside of  
factory settings will not be covered by the  
vehicle warranty.  
Caution  
Warning (Continued)  
Even small amounts of contamination can  
cause damage to vehicle systems. Do not  
allow contaminants to contact the fluids,  
reservoir caps, or dipsticks.  
or parts. Always follow owner’s manual  
procedures and consult the service  
manual for your vehicle before doing any  
service work.  
Damage to vehicle components resulting  
from modifications or the installation or use  
of non-GM certified parts, including control  
module or software modifications, is not  
covered under the terms of the vehicle  
warranty and may affect remaining  
Hood  
If doing some of your own service work, use  
the proper service manual. It tells you much  
more about how to service the vehicle than  
this manual can. To order the proper service  
manual, see Publication Ordering  
Warning  
{
warranty coverage for affected parts.  
For vehicles with auto engine stop/start,  
turn the vehicle off before opening the  
hood. If the vehicle is on, the engine will  
start when the hood is opened. You or  
others could be injured.  
GM Accessories are designed to complement  
and function with other systems on the  
vehicle. See your dealer to accessorize the  
vehicle using genuine GM Accessories  
installed by a dealer technician.  
Information 0 437.  
This vehicle has an airbag system. Before  
attempting to do your own service work,  
see Servicing the Airbag-Equipped Vehicle  
0 68.  
Also, see Adding Equipment to the  
Airbag-Equipped Vehicle 0 68.  
If equipped with remote vehicle start, open  
the hood before performing any service  
work to prevent remote starting the vehicle  
accidentally. See Remote Vehicle Start 0 18.  
Warning  
{
Components under the hood can get hot  
from running the engine. To help avoid  
the risk of burning unprotected skin,  
never touch these components until they  
have cooled, and always use a glove or  
towel to avoid direct skin contact.  
Vehicle Checks  
Keep a record with all parts receipts and list  
the mileage and the date of any service  
work performed. See Maintenance Records  
0 424.  
Doing Your Own Service Work  
Warning  
{
It can be dangerous to work on your  
vehicle if you do not have the proper  
knowledge, service manual, tools,  
(Continued)  
Clear any snow from the hood before  
opening.  
Vehicle Care  
335  
To open the hood:  
To close the hood:  
1. Pull the hood release lever with the  
i symbol. It is on the lower left side  
of the instrument panel.  
1. Before closing the hood, be sure all filler  
caps are on properly, and all tools are  
removed.  
2. Pull the hood down until the strut  
system is no longer holding up the hood.  
3. Allow the hood to fall. Check to make  
sure the hood is latched completely.  
Repeat this process with additional force  
if necessary.  
Warning  
{
Do not drive the vehicle if the hood is  
not latched completely. The hood could  
open fully, block your vision, and cause a  
crash. You or others could be injured.  
Always close the hood completely before  
driving.  
2. Go to the front of the vehicle and locate  
the secondary release lever under the  
front center of the hood. Push the  
secondary hood release lever to the right  
to release.  
The Driver Information Center (DIC) will  
display a message if the hood is not fully  
closed, and the vehicle is moving. Stop and  
turn off the vehicle, check the hood for  
obstructions, and close the hood again.  
Check to see if the message still appears on  
the DIC.  
3. After you have partially lifted the hood,  
the gas strut system will automatically  
lift the hood and hold it in the fully  
open position.  
336  
Vehicle Care  
Engine Compartment Overview  
2.7L L4 Engine (L3B)  
Vehicle Care  
337  
1. Remote Negative (–) Location. See Jump  
Starting - North America 0 399.  
2. Positive (+) Terminal (Under Cover). See  
Jump Starting - North America 0 399.  
3. Battery - North America 0 352.  
4. Engine Compartment Fuse Block 0 362.  
5. Engine Cooling Fans (Out of View). See  
Cooling System 0 343.  
6. Engine Oil Fill Cap. See “When to Add  
Engine Oil” under Engine Oil 0 339.  
7. Engine Oil Dipstick. See “Checking Engine  
Oil” under Engine Oil 0 339.  
8. Coolant Surge Tank and Pressure Cap.  
See Cooling System 0 343.  
9. Engine Air Cleaner/Filter 0 342.  
10. Brake Fluid Reservoir. See Brake Fluid  
0 351.  
11. Windshield Washer Fluid Reservoir. See  
“Adding Washer Fluid” under Washer  
Fluid 0 349.  
338  
Vehicle Care  
5.3L V8 Engine (L84) Shown, 6.2L V8 Engine (L87) Similar  
1. Remote Negative (–) Location. See Jump  
Starting - North America 0 399.  
5. Engine Oil Dipstick. See “Checking Engine  
Oil” under Engine Oil 0 339.  
8. Coolant Surge Tank and Pressure Cap.  
See Cooling System 0 343.  
2. Positive (+) Terminal (Under Cover). See  
Jump Starting - North America 0 399.  
6. Engine Cooling Fans (Out of View). See  
Cooling System 0 343.  
9. Engine Air Cleaner/Filter 0 342.  
10. Brake Fluid Reservoir. See Brake Fluid  
0 351.  
3. Battery - North America 0 352.  
7. Engine Oil Fill Cap. See “When to Add  
Engine Oil” under Engine Oil 0 339.  
4. Engine Compartment Fuse Block 0 362.  
Vehicle Care  
339  
11. Windshield Washer Fluid Reservoir. See  
“Adding Washer Fluid” under Washer  
Fluid 0 349.  
dipstick, wipe it with a clean paper towel  
or cloth, then push it back in all the way.  
Remove it again, keeping the tip down,  
and check the level.  
Checking Engine Oil  
Check the engine oil level regularly, every  
650 km (400 mi), especially prior to a long  
trip. The engine oil dipstick handle is a loop.  
See Engine Compartment Overview 0 336 for  
the location.  
Engine Oil  
When to Add Engine Oil  
To ensure proper engine performance and  
long life, careful attention must be paid to  
engine oil. Following these simple, but  
important steps will help protect your  
investment:  
Warning  
{
The engine oil dipstick handle may be  
hot; it could burn you. Use a towel or  
glove to touch the dipstick handle.  
.
Use engine oil approved to the proper  
specification and of the proper viscosity  
grade. See “Selecting the Right Engine  
Oil” in this section.  
If the oil is below the cross-hatched area at  
the tip of the dipstick and the engine has  
been off for at least 15 minutes, add 1 L  
(1 qt) of the recommended oil and then  
recheck the level. See “Selecting the Right  
Engine Oil” later in this section for an  
explanation of what kind of oil to use. For  
engine oil crankcase capacity, see Capacities  
and Specifications 0 426.  
If a low oil Driver Information Center (DIC)  
message displays, check the oil level.  
.
Check the engine oil level regularly and  
maintain the proper oil level. See  
“Checking Engine Oil” and “When to Add  
Engine Oil” in this section.  
Follow these guidelines:  
.
To get an accurate reading, park the  
vehicle on level ground. Check the engine  
oil level after the engine has been off for  
at least two hours. Checking the engine  
oil level on steep grades or too soon after  
engine shutoff can result in incorrect  
readings. Accuracy improves when  
.
.
Change the engine oil at the appropriate  
time. See Engine Oil Life System 0 341.  
Always dispose of engine oil properly. See  
“What to Do with Used Oil” in this  
section.  
Caution  
checking a cold engine prior to starting.  
Remove the dipstick and check the level.  
Do not add too much oil. Oil levels above  
or below the acceptable operating range  
shown on the dipstick are harmful to the  
engine. If the oil level is above the  
operating range (i.e., the engine has so  
(Continued)  
.
If unable to wait two hours, the engine  
must be off for at least 15 minutes if the  
engine is warm, or at least 30 minutes if  
the engine is not warm. Pull out the  
340  
Vehicle Care  
Engine Oil Additives/Engine Oil Flushes  
Caution (Continued)  
Do not add anything to the oil. The  
recommended oils meeting the dexos1  
specification are all that is needed for good  
performance and engine protection.  
much oil that the oil level gets above the  
cross-hatched area that shows the proper  
operating range), the engine could be  
damaged. Drain the excess oil or limit  
driving of the vehicle, and seek a service  
professional to remove the excess oil.  
Engine oil system flushes are not  
recommended and could cause engine  
damage not covered by the vehicle  
warranty.  
Caution  
Failure to use the recommended engine  
oil or equivalent can result in engine  
damage not covered by the vehicle  
warranty.  
See Engine Compartment Overview 0 336 for  
the location of the engine oil fill cap.  
What to Do with Used Oil  
Add enough oil to put the level somewhere  
in the proper operating range. Push the  
dipstick all the way back in when through.  
Used engine oil contains certain elements  
that can be unhealthy for your skin and  
could even cause cancer. Do not let used oil  
stay on your skin for very long. Clean your  
skin and nails with soap and water, or a  
good hand cleaner. Wash or properly  
dispose of clothing or rags containing used  
engine oil. See the manufacturer's warnings  
about the use and disposal of oil products.  
Viscosity Grade  
Use SAE 0W-20 viscosity grade engine oil for  
the 5.3L and 6.2L V8 engines.  
Selecting the Right Engine Oil  
Selecting the right engine oil depends on  
both the proper oil specification and  
viscosity grade. See Recommended Fluids  
and Lubricants 0 421.  
Use SAE 5W-30 viscosity grade engine oil for  
the 2.7L L4 engine. Cold Temperature  
Operation: In an area of extreme cold,  
where the temperature falls below −29 °C  
(−20 °F), an SAE 0W-30 oil may be used. An  
oil of this viscosity grade will provide easier  
cold starting for the engine at extremely  
low temperatures.  
Specification  
Used oil can be a threat to the environment.  
If you change your own oil, be sure to drain  
all the oil from the filter before disposal.  
Never dispose of oil by putting it in the  
trash or pouring it on the ground, into  
sewers, or into streams or bodies of water.  
Recycle it by taking it to a place that  
collects used oil.  
Use full synthetic engine oils that meet the  
dexos1 specification. Engine oils that have  
been approved by GM as meeting the  
dexos1 specification are marked with the  
dexos1 approved logo.  
When selecting an oil of the appropriate  
viscosity grade, it is recommended to select  
an oil of the correct specification. See  
“Specification” earlier in this section.  
Vehicle Care  
341  
will perform this work and reset the system.  
It is also important to check the oil regularly  
over the course of an oil drain interval and  
keep it at the proper level.  
The oil life system can also be reset as  
follows:  
Engine Oil Life System  
When to Change Engine Oil  
1. Display the oil life percentage on the  
DIC. See Driver Information Center (DIC)  
(Base Level) 0 127 or Driver Information  
Center (DIC) (Uplevel) 0 128.  
This vehicle has a computer system that  
indicates when to change the engine oil and  
filter. This is based on a combination of  
factors which include engine revolutions,  
engine temperature, and miles driven. Based  
on driving conditions, the mileage at which  
an oil change is indicated can vary  
considerably. For the oil life system to work  
properly, the system must be reset every  
time the oil is changed.  
If the system is ever reset accidentally, the  
oil must be changed at 5 000 km (3,000 mi)  
since the last oil change. Remember to reset  
the oil life system whenever the oil is  
changed.  
2. Fully press the accelerator pedal slowly  
three times within five seconds.  
3. If the display changes to 100%, the  
system is reset.  
How to Reset the Engine Oil Life System  
If the vehicle has a CHANGE ENGINE OIL  
SOON message and it comes back on when  
the vehicle is started and/or the oil  
life percentage is near 0%, the engine oil  
life system has not been reset. Repeat the  
procedure.  
Reset the system whenever the engine oil is  
changed so that the system can calculate  
the next engine oil change. Always reset the  
engine oil life to 100% after every oil  
change. It will not reset itself. To reset the  
engine oil life system:  
On some vehicles, when the system has  
calculated that oil life has been diminished,  
a CHANGE ENGINE OIL SOON message comes  
on to indicate that an oil change is  
1. Display the oil life percentage on the  
DIC. See Driver Information Center (DIC)  
(Base Level) 0 127 or Driver Information  
Center (DIC) (Uplevel) 0 128.  
necessary. Change the oil as soon as  
Automatic Transmission Fluid  
possible within the next 1 000 km (600 mi).  
It is possible that, if driving under the best  
conditions, the oil life system might indicate  
that an oil change is not necessary for up to  
a year. The engine oil and filter must be  
changed at least once a year and, at this  
time, the system must be reset. For vehicles  
without the CHANGE ENGINE OIL SOON  
message, an oil change is needed when the  
REMAINING OIL LIFE percentage is near 0%.  
Your dealer has trained service people who  
When to Check and Change Automatic  
Transmission Fluid  
2. Press the thumbwheel on the steering  
wheel, or the trip odometer reset stem if  
the vehicle does not have DIC controls,  
for several seconds. When the  
confirmation message displays, select  
YES. The oil life will change to 100%.  
It is usually not necessary to check the  
transmission fluid level. The only reason for  
fluid loss is a transmission leak or  
overheated transmission. This vehicle is not  
equipped with a transmission fluid level  
dipstick. There is a special procedure for  
checking and changing the transmission fluid  
in these vehicles. Because this procedure is  
342  
Vehicle Care  
difficult, this should be done at the dealer.  
Contact the dealer for additional information  
or the procedure can be found in the service  
manual. See Publication Ordering  
Select Reset then press the thumbwheel  
or press the reset stem for several  
seconds.  
When to Change the Engine Air Filter  
When the Driver Information Center (DIC)  
displays a message to replace the engine air  
filter at the next oil change, follow this  
timing.  
4. Press the thumbwheel or the reset stem  
to confirm the reset.  
Information 0 437.  
Caution  
When the DIC displays a message to replace  
the engine air filter soon, replace the engine  
air filter at the earliest convenience.  
Engine Air Cleaner/Filter  
The engine air cleaner/filter is on the driver  
side of the engine compartment. See Engine  
Compartment Overview 0 336.  
Use of the incorrect automatic  
transmission fluid may damage the  
vehicle, and the damage may not be  
covered by the vehicle warranty. Always  
use the correct automatic transmission  
fluid. See Recommended Fluids and  
Lubricants 0 421.  
The system must be reset after the engine  
air filter is changed.  
When to Inspect the Engine Air Cleaner/  
Filter  
If the DIC displays a message to check the  
engine air filter system, see your dealer.  
If the vehicle is not equipped with the  
engine air filter life system see Maintenance  
Schedule 0 417 for intervals on inspecting  
and replacing the engine air cleaner filter.  
How to Reset the Engine Air Filter Life  
System  
Change the fluid and filter at the scheduled  
maintenance intervals listed in Maintenance  
Schedule 0 417. Be sure to use the  
transmission fluid listed in Recommended  
Fluids and Lubricants 0 421.  
To reset:  
1. Place the vehicle in P (Park).  
How to Inspect/Replace the Engine Air  
Cleaner/Filter  
2. Display the Air Filter Life on the DIC. See  
Driver Information Center (DIC) (Base  
Level) 0 127 or Driver Information Center  
(DIC) (Uplevel) 0 128.  
Do not start or run the engine with the  
engine air cleaner/filter housing open.  
Before removing the engine air cleaner/  
filter, clear any dirt and debris away from  
the engine air cleaner/filter housing and  
nearby components. Remove the engine air  
cleaner/filter. Lightly tap and shake the  
engine air cleaner/filter (away from the  
vehicle), to release loose dust and dirt.  
Engine Air Filter Life System  
If equipped, this feature provides the engine  
air filter’s remaining life and best timing for  
a change. The timing to change an engine  
air filter depends on driving and  
3. Press T on the steering wheel, or press  
the trip odometer reset stem if the  
vehicle does not have DIC controls, to  
move to the Reset/Disable display area.  
environmental conditions.  
Vehicle Care  
Warning  
343  
Inspect the engine air cleaner/filter for  
damage; replace if damaged. Do not clean  
the engine air cleaner/filter or components  
with water or compressed air.  
3. Remove the three screws on top of the  
cover of the housing, then slide and lift  
the cover.  
{
Operating the engine with the air  
cleaner/filter off can cause you or others  
to be burned. Use caution when working  
on the engine. Do not start the engine or  
drive the vehicle with the air cleaner/  
filter off, as flames may be present if the  
engine backfires.  
4. Lift and remove the engine air cleaner/  
filter.  
To inspect or replace the engine air cleaner/  
filter:  
Warning  
{
If part replacement is necessary, the part  
must be replaced with one of the same  
part number or with an equivalent part.  
Use of a replacement part without the  
same fit, form, and function may result  
in personal injury or damage to the  
vehicle.  
Caution  
If the air cleaner/filter is off, dirt can  
easily get into the engine, which could  
damage it. Always have the air cleaner/  
filter in place when driving.  
5. Lightly tap and shake the engine air  
cleaner/filter, away from the vehicle, to  
release loose dust and dirt. Replace the  
engine air filter if damaged.  
Cooling System  
5.3L V8 Engine (L84) Shown, 2.7L L4 Engine  
(L3B), and 6.2L V8 Engine (L87) Similar.  
If the vehicle has the Duramax diesel  
engine, see the Duramax diesel supplement.  
6. Reverse Steps 2–5 to reinstall the engine  
air cleaner/filter cover housing.  
The cooling system allows the engine to  
maintain the correct working temperature.  
1. Air Duct Clamp  
2. Screws  
7. If equipped, reset the engine air filter life  
system after replacing the engine air  
filter. See Engine Air Filter Life System  
0 342.  
1. Locate the air cleaner/filter assembly.  
See Engine Compartment Overview  
0 336.  
2. Disconnect the outlet duct by loosening  
the air duct clamp (1).  
344  
Vehicle Care  
1. Engine Electric Cooling Fans (Out  
of View)  
2. Coolant Surge Tank and Pressure Cap  
The following explains the cooling system  
and how to check and add coolant when it  
is low. If there is a problem with engine  
overheating, see Engine Overheating 0 347.  
Warning  
{
What to Use  
An underhood electric fan can start up  
even when the engine is not running and  
can cause injury. Keep hands, clothing,  
and tools away from any underhood  
electric fan.  
Warning  
{
Plain water, or other liquids such as  
alcohol, can boil before the proper  
coolant mixture will. With plain water or  
the wrong mixture, the engine could get  
too hot but there would not be an  
overheat warning. The engine could catch  
fire and you or others could be burned.  
2.7L L4 Engine (L3B)  
Warning  
{
Do not touch heater, radiator, a/c pipes  
or hoses, or other engine parts. They can  
be very hot and can burn you. Do not  
run the engine if there is a leak; all  
coolant could leak out. That could cause  
an engine fire and can burn you. Fix any  
leak before driving the vehicle.  
Use a 50/50 mixture of clean, drinkable  
water and DEX-COOL coolant. This mixture:  
Gives freezing protection down to −37 °C  
(−34 °F), outside temperature.  
Gives boiling protection up to 129 °C  
(265 °F), engine temperature.  
Protects against rust and corrosion.  
Will not damage aluminum parts.  
.
.
Engine Coolant  
.
.
.
The cooling system in the vehicle is filled  
with DEX-COOL engine coolant. This coolant  
is designed to remain in the vehicle for  
5 years or 240 000 km (150,000 mi),  
whichever occurs first.  
Helps keep the proper engine  
temperature.  
5.3L V8 Engine (L84) Shown, 6.2L V8 Engine  
(L87) Similar  
Vehicle Care  
345  
Automatic Coolant Service Fill  
Instructions (L3B Engine)  
Caution  
Do not use anything other than a mix of  
DEX-COOL coolant that meets GM  
Standard GMW3420 and clean, drinkable  
water. Anything else can cause damage  
to the engine cooling system and the  
vehicle, which would not be covered by  
the vehicle warranty.  
This feature assists in filling and removing  
air from the cooling system after service of  
components or when coolant is added after  
being too low.  
To activate the fill and air removal process:  
1. Remove the coolant surge tank pressure  
cap when the cooling system, including  
the coolant surge tank pressure cap and  
upper radiator hose, is no longer hot.  
Turn the pressure cap; slowly  
counterclockwise about one full turn. If a  
hiss is heard, wait for that to stop.  
A hiss means there is still some  
pressure left.  
Never dispose of engine coolant by putting  
it in the trash, or by pouring it on the  
ground, or into sewers, streams, or bodies of  
water. Have the coolant changed by an  
authorized service center, familiar with legal  
requirements regarding used coolant  
disposal. This will help protect the  
All Engines  
Check to see if coolant is visible in the  
coolant surge tank. If the coolant inside the  
coolant surge tank is boiling, wait until it  
cools down. The coolant level should be at  
or above the indicated mark. If it is not,  
there may be a leak in the cooling system.  
environment and your health.  
2. Keep turning the pressure cap slowly,  
and remove it.  
Checking Coolant  
3. Fill the coolant surge tank with the  
proper mixture to the indicated mark.  
The coolant surge tank is in the engine  
compartment on the driver side of the  
vehicle. See Engine Compartment Overview  
0 336.  
If coolant is visible but the coolant level is  
not at or above the indicated mark, see the  
following sections on how to add coolant to  
the coolant surge tank following.  
4. Connect the vehicle to a battery charger.  
5. Set the ignition to service mode, see  
Ignition Positions 0 211.  
The vehicle must be on a level surface when  
checking the coolant level.  
6. Turn off the air conditioning.  
7. Set the parking brake.  
346  
Vehicle Care  
8. At the same time, press the accelerator  
and the brake for automatic vehicles for  
two seconds, then release.  
Caution  
Warning  
{
Failure to follow the specific coolant fill  
procedure could cause the engine to  
overheat and could cause system  
damage. If coolant is not visible in the  
surge tank, contact your dealer.  
Spilling coolant on hot engine parts can  
burn you. Coolant contains ethylene  
glycol and it will burn if the engine parts  
are hot enough.  
9. Listen for pump activation and  
movement of the control valves while  
watching the level of the coolant in the  
surge tank. Add fluid as the level drops  
below the indicated mark on the surge  
tank. Allow 15 minutes for the fill and air  
removal process to complete.  
If no coolant is visible in the surge tank, add  
coolant.  
Warning  
{
Plain water, or other liquids such as  
alcohol, can boil before the proper  
10. Reinstall the surge tank cap.  
coolant mixture will. With plain water or  
the wrong mixture, the engine could get  
too hot but there would not be an  
overheat warning. The engine could catch  
fire and you or others could be burned.  
If the tank empties, turn the ignition off,  
allow the Electronic Control Module (ECM) to  
go to sleep, about two minutes, refill to the  
indicated mark, and repeat Steps 5–9.  
How to Add Coolant to the Coolant  
Surge Tank for Gasoline Engines  
Except L3B  
1. Remove the coolant surge tank pressure  
cap when the cooling system, including  
the coolant surge tank pressure cap and  
upper radiator hose, is no longer hot.  
Warning  
{
If the vehicle has a diesel engine, see  
“Cooling System” in the Duramax diesel  
supplement for the proper coolant fill  
procedure.  
Steam and scalding liquids from a hot  
cooling system are under pressure.  
Turning the pressure cap, even a little,  
can cause them to come out at high  
speed and you could be burned. Never  
turn the cap when the cooling system,  
including the pressure cap, is hot. Wait  
for the cooling system and pressure cap  
to cool.  
Turn the pressure cap slowly  
counterclockwise about one full turn. If a  
hiss is heard, wait for that to stop.  
A hiss means there is still some  
pressure left.  
2. Keep turning the pressure cap slowly,  
and remove it.  
3. Fill the coolant surge tank with the  
proper mixture to the full cold mark.  
Vehicle Care  
347  
4. With the coolant surge tank pressure cap  
off, start the engine and let it run until  
the engine coolant temperature gauge  
indicates approximately 90 °C (195 °F).  
2.7L L4, 5.3L V8, and 6.2L V8 Engines  
Caution  
Check to see if the engine cooling fans are  
running. If the engine is overheating, the  
fans should be running. If they are not, do  
not continue to run the engine and have the  
vehicle serviced.  
Do not run the engine if there is a leak  
in the engine cooling system. This can  
cause a loss of all coolant and can  
damage the system and vehicle. Have  
any leaks fixed right away.  
By this time, the coolant level inside the  
coolant surge tank may be lower. If the  
level is lower, add more of the proper  
mixture to the coolant surge tank until  
the level reaches the indicated mark.  
If the engine or transmission detects an  
impending hot fluid condition, then the  
transmission may force upshifts to limit  
temperatures. Downshifts may also be  
prevented in this instance. Normal operation  
may continue unless the display indicates  
there is a hot condition and engine should  
be idled.  
The vehicle has several indicators to warn of  
engine overheating.  
5. Replace the pressure cap tightly.  
There is a coolant temperature gauge in the  
vehicle's instrument cluster. See Engine  
Coolant Temperature Gauge 0 113.  
6. Verify coolant level after the engine is  
shut off and the coolant is cold.  
If necessary, repeat coolant fill procedure  
Steps 1–6.  
In addition, there are ENGINE OVERHEATED  
STOP ENGINE, ENGINE OVERHEATED IDLE  
ENGINE, and ENGINE POWER IS REDUCED  
messages in the Driver Information  
Center (DIC).  
If Steam is Coming from the Engine  
Compartment  
Caution  
If the pressure cap is not tightly installed,  
coolant loss and engine damage may  
occur. Be sure the cap is properly and  
tightly secured.  
Warning  
{
If the decision is made not to lift the hood  
when this warning appears, get service help  
right away. See Roadside Assistance Program  
0 433.  
Steam and scalding liquids from a hot  
cooling system are under pressure.  
Turning the pressure cap, even a little,  
can cause them to come out at high  
speed and you could be burned. Never  
turn the cap when the cooling system,  
including the pressure cap, is hot. Wait  
for the cooling system and pressure cap  
to cool.  
Engine Overheating  
If the vehicle has the Duramax diesel  
engine, see the Duramax diesel supplement.  
If the decision is made to lift the hood,  
make sure the vehicle is parked on a level  
surface.  
348  
Vehicle Care  
3. When it is safe to do so, pull off the  
road, shift to P (Park) or N (Neutral) and  
let the engine idle.  
If No Steam is Coming from the Engine  
Compartment  
Overheated Engine Protection  
Operating Mode  
The ENGINE OVERHEATED STOP ENGINE or  
the ENGINE OVERHEATED IDLE ENGINE  
message, along with a low coolant  
If an overheated engine condition exists and  
the ENGINE POWER IS REDUCED message  
displays, an overheat protection mode which  
alternates firing groups of cylinders helps to  
prevent engine damage. In this mode, a loss  
in power and engine performance will be  
noticed. This operating mode allows the  
vehicle to be driven to a safe place in an  
emergency. Driving extended distances and/  
or towing a trailer in the overheat  
If the temperature overheat gauge is no  
longer in the overheat zone or an overheat  
warning no longer displays, the vehicle can  
be driven. Continue to drive the vehicle  
slowly for about 10 minutes. Keep a safe  
vehicle distance from the vehicle in front.  
If the warning does not come back on,  
continue to drive normally and have the  
cooling system checked for proper fill and  
function.  
condition, can indicate a serious problem.  
The 2.7L L4 engine will shut down  
automatically if the ENGINE OVERHEATED  
STOP ENGINE message displays.  
If there is an engine overheat warning, but  
no steam is seen or heard, the problem may  
not be too serious. Sometimes the engine  
can get a little too hot when the vehicle:  
protection mode should be avoided.  
If the warning continues, pull over, stop, and  
park the vehicle right away.  
If the engine or transmission detects an  
impending hot fluid condition, then the  
transmission may force upshifts to limit  
temperatures. Downshifts may also be  
prevented in this instance. Normal operation  
may continue unless the display indicates  
there is a hot condition and engine should  
be idled.  
.
.
.
.
Climbs a long hill on a hot day.  
Stops after high-speed driving.  
Idles for long periods in traffic.  
Tows a trailer; see Trailer Towing 0 303.  
If there is still no sign of steam and the  
vehicle is equipped with an engine driven  
cooling fan, push down the accelerator until  
the engine speed is about twice as fast as  
normal idle speed for at least five minutes  
while the vehicle is parked. If the warning is  
still there, turn off the engine and get  
everyone out of the vehicle until it  
cools down.  
If the ENGINE OVERHEATED STOP ENGINE or  
the ENGINE OVERHEATED IDLE ENGINE  
message appears with no sign of steam, try  
this for a minute or so:  
Caution  
1. Turn the air conditioning off.  
After driving in the overheated engine  
protection operating mode, the engine oil  
will be severely degraded. Any repairs  
performed before the engine is cool may  
(Continued)  
2. Turn the heater on to the highest  
temperature and to the highest fan  
speed. Open the windows as necessary.  
If there is no sign of steam, idle the engine  
for five minutes while parked. If the warning  
is still displayed, turn off the engine until it  
cools down.  
Vehicle Care  
Caution  
349  
Washer Fluid  
Caution (Continued)  
.
.
.
Do not use washer fluid that contains  
any type of water repellent coating.  
This can cause the wiper blades to  
chatter or skip.  
cause engine damage. Allow the engine  
to cool before attempting any repair.  
Repair the cause of coolant loss, change  
the oil, and reset the oil life system. See  
Engine Oil 0 339.  
What to Use  
When windshield washer fluid needs to be  
added, be sure to read the manufacturer's  
instructions before use. Use a fluid that has  
sufficient protection against freezing in an  
area where the temperature may fall below  
freezing.  
Do not use engine coolant (antifreeze)  
in the windshield washer. It can  
damage the windshield washer system  
and paint.  
Engine Fan  
If the vehicle has the Duramax diesel  
engine, see the Duramax diesel supplement.  
Adding Washer Fluid  
Do not mix water with ready-to-use  
washer fluid. Water can cause the  
solution to freeze and damage the  
washer fluid tank and other parts of  
the washer system.  
The vehicle has a low washer fluid message  
on the DIC that comes on when the washer  
fluid is low. The message is displayed for  
15 seconds at the start of each ignition cycle.  
When the WASHER FLUID LOW ADD FLUID  
message displays, washer fluid will need to  
be added to the windshield washer fluid  
reservoir.  
The vehicle has electric cooling fan(s). The  
fans may be heard spinning at low speed  
during most everyday driving. The fans may  
turn off if no cooling is required. Under  
heavy vehicle loading, trailer towing, high  
outside temperatures, or operation of the air  
conditioning system, the fans may change  
to high speed and an increase in fan noise  
may be heard. This is normal and indicates  
that the cooling system is functioning  
properly. The fans will change to low speed  
when additional cooling is no longer  
required.  
.
.
When using concentrated washer fluid,  
follow the manufacturer instructions  
for adding water.  
Fill the washer fluid tank only  
three-quarters full when it is very cold.  
This allows for fluid expansion if  
freezing occurs, which could damage  
the tank if it is completely full.  
Brakes  
The electric engine cooling fans may run  
after the engine has been turned off. This is  
normal and no service is required.  
Open the cap with the washer symbol on it.  
Add washer fluid until the tank is full. See  
Engine Compartment Overview 0 336 for  
reservoir location.  
Disc brake linings have built-in wear  
indicators that make a high-pitched warning  
sound when the brake linings are worn and  
350  
Vehicle Care  
new linings are needed. The sound can come  
and go or can be heard all the time when  
the vehicle is moving, except when applying  
the brake pedal firmly.  
Brake pads should be replaced as complete  
axle sets.  
When the system has determined that the  
brake pads need to be replaced, a message  
will display, which may include mileage  
remaining.  
Brake Pedal Travel  
See your dealer if the brake pedal does not  
return to normal height, or if there is a  
rapid increase in pedal travel. This could be  
a sign that brake service may be required.  
Brake pads should always be replaced as  
complete axle sets.  
Warning  
{
The brake wear warning sound means  
that soon the brakes will not work well.  
That could lead to a crash. When the  
brake wear warning sound is heard, have  
the vehicle serviced.  
How to Reset the Brake Pad Life System  
The system will automatically detect when  
significantly worn brake pads are replaced.  
When the ignition is turned on after new  
pads and wear sensors are installed, a  
message will display. Follow the prompts to  
reset the system.  
Replacing Brake System Parts  
Always replace brake system parts with  
new, approved replacement parts. If this is  
not done, the brakes may not work  
properly. The braking performance can  
change in many ways if the wrong brake  
parts are installed or if parts are improperly  
installed.  
Caution  
Continuing to drive with worn-out brake  
linings could result in costly brake  
repairs.  
The brake pad life system can also be  
manually reset:  
1. Display Brake Pad Life on the DIC. See  
Driver Information Center (DIC) (Base  
Level) 0 127 or Driver Information Center  
(DIC) (Uplevel) 0 128.  
Brake Pad Life System  
Some driving conditions or climates can  
cause a brake squeal when the brakes are  
first applied, clearing up following several  
applications. This does not mean something  
is wrong with the brakes.  
When to Change Brake Pads  
This vehicle has a system that estimates the  
remaining life of the front and rear brake  
pads. Brake pad life is displayed in the  
Driver Information Center (DIC), along with  
a percentage for each axle. The system must  
be reset every time the brake pads are  
changed.  
2. Press the thumbwheel or the trip  
odometer reset stem if the vehicle does  
not have DIC buttons. Select front or rear  
pads as appropriate.  
Properly torqued wheel nuts are necessary  
to help prevent brake pulsation. When tires  
are rotated, inspect brake linings for wear  
and evenly tighten wheel nuts in the proper  
sequence to torque specifications. See  
Capacities and Specifications 0 426.  
3. Select YES on the confirmation message,  
or press the trip odometer reset stem on  
a base level DIC. Repeat for pads on the  
other axle if they were also replaced.  
Vehicle Care  
351  
Always clean the brake fluid reservoir cap  
and the area around the cap before  
removing it.  
How to Disable the Brake Pad Life  
System  
Brake Fluid  
The brake pad life system can be turned off.  
This may be necessary if aftermarket brake  
pads without wear sensors are installed.  
When the system is turned off, the front  
and rear brake pad life percentages will not  
display. However, the built-in wear  
indicators that make a high-pitched warning  
sound when the brake pads are worn can  
still determine when the pads should be  
replaced. See Brakes 0 349.  
Do not top off the brake fluid. Adding fluid  
does not correct a leak. If fluid is added  
when the linings are worn, there will be too  
much fluid when new brake linings are  
installed. Add or remove fluid, as necessary,  
only when work is done on the brake  
hydraulic system.  
The brake master cylinder reservoir is filled  
with GM approved DOT 4 brake fluid as  
indicated on the reservoir cap. See Engine  
Compartment Overview 0 336 for the  
location of the reservoir.  
Warning  
{
If too much brake fluid is added, it can  
spill on the engine and burn, if the  
engine is hot enough. You or others could  
be burned, and the vehicle could be  
damaged. Add brake fluid only when  
work is done on the brake hydraulic  
system.  
To turn off the brake pad life system:  
Checking Brake Fluid  
1. Display Brake Pad Life on the DIC. See  
Driver Information Center (DIC) (Base  
Level) 0 127 or Driver Information Center  
(DIC) (Uplevel) 0 128.  
With the vehicle in P (Park) on a level  
surface, the brake fluid level should be  
between the minimum and maximum marks  
on the brake fluid reservoir.  
2. Select DISABLE.  
There are only two reasons why the brake  
fluid level in the reservoir may go down:  
To turn the brake pad life system back on,  
follow the above steps but select ENABLE in  
Step 2.  
When the brake fluid falls to a low level,  
the brake warning light comes on. See Brake  
System Warning Light 0 119.  
.
Normal brake lining wear. When new  
linings are installed, the fluid level goes  
back up.  
Brake fluid absorbs water over time which  
degrades the effectiveness of the brake fluid.  
Replace brake fluid at the specified intervals  
to prevent increased stopping distance. See  
Maintenance Schedule 0 417.  
.
A fluid leak in the brake hydraulic system.  
Have the brake hydraulic system fixed.  
With a leak, the brakes will not  
work well.  
352  
Vehicle Care  
What to Add  
Stop/Start System  
Vehicle Storage  
Use only GM approved DOT 4 brake fluid  
from a clean, sealed container. See  
Recommended Fluids and Lubricants 0 421.  
Vehicles equipped with a 2.7L L3B, , 5.3L L84  
or 6.2L L87 are equipped with a Stop/Start  
system to shut off the engine to help  
Warning  
{
Batteries have acid that can burn you and  
gas that can explode. You can be badly  
hurt if you are not careful. Always wear  
eye protection. See Jump Starting - North  
America 0 399 for tips on working  
conserve fuel. See Stop/Start System 0 214.  
Warning  
{
Vehicles with the Stop/Start system have an  
Absorbed Glass Mat (AGM) 12-volt battery.  
Installation of a standard 12-volt battery will  
result in reduced 12-volt battery life. When  
using a 12-volt battery charger on the 12-volt  
AGM battery, some chargers have an AGM  
battery setting on the charger. If available,  
use the AGM setting on the charger to limit  
charge voltage to 14.8 volts. Follow the  
charger manufacturer’s instructions.  
The wrong or contaminated brake fluid  
could result in damage to the brake  
system. This could result in the loss of  
braking leading to a possible injury.  
Always use the proper GM approved  
brake fluid.  
around a battery without getting hurt.  
Infrequent Usage: Remove the black,  
negative (−) cable from the battery to keep  
the battery from running down.  
Extended Storage: Remove the black,  
negative (−) cable from the battery or use a  
battery trickle charger.  
Caution  
If brake fluid is spilled on the vehicle's  
painted surfaces, the paint finish can be  
damaged. Immediately wash off any  
painted surface.  
Warning  
{
Negative Battery Cable Disconnection  
WARNING: Battery posts, terminals and  
related accessories can expose you to  
chemicals including lead and lead  
compounds, which are known to the  
State of California to cause cancer and  
birth defects or other reproductive harm.  
Wash hands after handling. For more  
information go to  
Warning  
{
Before disconnecting the negative battery  
cable, turn off all features, turn the  
ignition off, and remove the key,  
if equipped, from the vehicle. If this is  
not done, you or others could be injured,  
and the vehicle could be damaged.  
Battery - North America  
The original equipment battery is  
maintenance free. Do not remove the cap  
and do not add fluid.  
Refer to the replacement number shown on  
the original battery label when a new  
battery is needed. See Engine Compartment  
Overview 0 336 for battery location.  
www.P65Warnings.ca.gov.  
See California Proposition 65 Warning 0 1.  
Vehicle Care  
353  
1. Loosen and remove the negative battery  
cable nut (1) at the battery sensor  
connection.  
3. Cover the negative battery cable clamp,  
and negative battery post with a  
non-conductive material to prevent any  
contact with the negative battery cable.  
Caution  
If the battery is disconnected with the  
ignition on or the vehicle in Retained  
Accessory Power (RAP), the OnStar  
back-up battery will be permanently  
discharged and will need to be replaced.  
2. Remove the negative battery cable (2)  
from the battery sensor stud.  
Negative Battery Cable Reconnection  
3. Cover the negative battery cable  
terminal, battery sensor stud, and  
negative battery post with a  
non-conductive material to prevent any  
contact with the negative battery cable.  
Caution  
When reconnecting the battery:  
1. Make sure the lamps, features, and  
accessories are turned off.  
.
Use the original nut from the vehicle  
to secure the negative battery cable.  
Do not use a different nut. If you  
need a replacement nut, see your  
dealer.  
2. Turn the ignition off and remove the  
key, if equipped.  
For vehicles not equipped with the Stop/  
Start system:  
For vehicles equipped with the Stop/Start  
system:  
.
Tighten the nut with a hand tool. Do  
not use an impact wrench or power  
tools to tighten the nut.  
The vehicle could be damaged if these  
guidelines are not followed.  
Caution  
Do not use paints, lubricants, or corrosion  
inhibitors on the nut that secures the  
negative battery cable to the vehicle. This  
could damage the vehicle.  
1. Loosen the negative battery cable nut (1).  
2. Remove the negative battery cable  
clamp (2) from the negative battery post.  
354  
Vehicle Care  
For vehicles equipped with the Stop/Start  
system:  
What to Use  
Refer to Recommended Fluids and Lubricants  
0 421 to determine what kind of lubricant  
to use.  
1. Install the negative battery cable to the  
battery sensor stud.  
2. Install the negative battery cable nut to  
the battery sensor stud and tighten.  
Front Axle  
When to Check Lubricant  
3. Turn the ignition on.  
It is not necessary to regularly check the  
front axle fluid unless a leak is suspected or  
an unusual noise is heard. A fluid loss could  
indicate a problem. Have it inspected and  
repaired. This service can be complex. See  
your dealer.  
For vehicles not equipped with the Stop/  
Start system:  
1. Install the negative battery cable clamp  
to the negative battery post.  
2. Tighten the negative battery cable nut.  
3. Turn the ignition on.  
1. Fill Plug  
2. Drain Plug  
Do not directly power wash the transfer  
case and/or front/rear axle output seals.  
High pressure water can overcome the seals  
and contaminate the fluid. Contaminated  
fluid will decrease the life of the transfer  
case and/or drive axles and should be  
replaced.  
To get an accurate reading, the vehicle  
should be on a level surface.  
Four-Wheel Drive  
Transfer Case  
If the level is below the bottom of the fill  
plug (1) hole, located on the transfer case,  
some lubricant will need to be added. Add  
enough lubricant to raise the level to the  
bottom of the fill plug (1) hole. Use care not  
to overtighten the plug.  
When to Check Lubricant  
Refer to Maintenance Schedule 0 417 to  
determine when to check the lubricant.  
Rear Axle  
When to Check Lubricant  
When to Change Lubricant  
It is not necessary to regularly check the  
rear axle fluid unless a leak is suspected or  
an unusual noise is heard. A fluid loss could  
Refer to Maintenance Schedule 0 417 to  
determine how often to change the  
lubricant.  
Vehicle Care  
355  
indicate a problem. Have it inspected and  
repaired. This service can be complex. See  
your dealer.  
3. With the engine off, turn the ignition on,  
but do not start the engine. Without  
applying the regular brake, try to move  
the shift lever out of P (Park) with  
normal effort. If the shift lever moves  
out of P (Park), contact your dealer for  
service.  
foot pressure from the regular brake  
pedal. Do this until the vehicle is held by  
the parking brake only.  
To check the P (Park) mechanism's holding  
ability: With the engine running, shift to  
P (Park). Then release the parking brake  
followed by the regular brake.  
.
Do not directly power wash the transfer  
case and/or front/rear axle output seals.  
High pressure water can overcome the seals  
and contaminate the fluid. Contaminated  
fluid will decrease the life of the transfer  
case and/or drive axles and should be  
replaced.  
Contact your dealer if service is required.  
Park Brake and P (Park)  
Mechanism Check  
Wiper Blade Replacement  
Windshield wiper blades should be replaced  
periodically. See Maintenance Schedule  
0 417.  
Automatic Transmission Shift Lock  
Control Function Check  
(Mechanical Shifter)  
Warning  
{
When you are doing this check, the  
vehicle could begin to move. You or  
others could be injured and property  
could be damaged. Make sure there is  
room in front of the vehicle in case it  
begins to roll. Be ready to apply the  
regular brake at once should the vehicle  
begin to move.  
Replacement blades come in different types  
and are removed in different ways. For  
proper type and length, see Maintenance  
Replacement Parts 0 422.  
Warning  
{
When you are doing this inspection, the  
vehicle could move suddenly. If the  
vehicle moves, you or others could be  
injured.  
Caution  
Allowing the wiper arm to touch the  
windshield when no wiper blade is  
installed could damage the windshield.  
Any damage that occurs would not be  
covered by the vehicle warranty. Do not  
allow the wiper arm to touch the  
windshield.  
Park on a fairly steep hill, with the vehicle  
facing downhill. Keeping your foot on the  
regular brake, set the parking brake.  
To check the parking brake's holding  
ability: With the engine running and the  
transmission in N (Neutral), slowly remove  
1. Before starting this check, be sure there  
is enough room around the vehicle.  
It should be parked on a level surface.  
.
2. Apply the parking brake. Be ready to  
apply the regular brake immediately if  
the vehicle begins to move.  
356  
Vehicle Care  
Front Wiper Blade Replacement  
Glass Replacement  
Gas Strut(s)  
To replace the wiper blade:  
If the windshield or front side glass must be  
replaced, see your dealer to determine the  
correct replacement glass.  
Your vehicle may be equipped with gas  
strut(s) to provide assistance in lifting and  
holding open the hood/trunk/liftgate system  
in full open position.  
1. Pull the wiper assembly away from the  
windshield.  
Windshield Replacement  
Warning  
{
HUD System  
If the gas struts that hold open the hood,  
trunk, and/or liftgate fail, you or others  
could be seriously injured. Take the  
vehicle to your dealer for service  
If equipped, the windshield is part of the  
HUD system. If the windshield must be  
replaced, get one that is designed for HUD  
or the HUD image may look out of focus.  
immediately. Visually inspect the gas  
struts for signs of wear, cracks, or other  
damage periodically. Check to make sure  
the hood/trunk/liftgate is held open with  
enough force. If struts are failing to hold  
the hood/trunk/liftgate, do not operate.  
Have the vehicle serviced.  
Driver Assistance Systems  
If the windshield needs to be replaced and  
the vehicle is equipped with a front camera  
sensor for the Driver Assistance Systems, a  
GM replacement windshield is  
recommended. The replacement windshield  
must be installed according to GM  
2. Lift up on the latch in the middle of the  
wiper blade where the wiper arm  
attaches.  
specifications for proper alignment. If it is  
not, these systems may not work properly,  
they may display messages, or they may  
not work at all. See your dealer for proper  
windshield replacement.  
3. With the latch open, pull the wiper blade  
down toward the windshield far enough  
to release it from the J-hooked end of  
the wiper arm.  
Caution  
Do not apply tape or hang any objects  
from gas struts. Also do not push down  
or pull on gas struts. This may cause  
damage to the vehicle.  
4. Remove the wiper blade.  
5. Reverse Steps 1–3 for wiper blade  
replacement.  
See Maintenance Schedule 0 417.  
Vehicle Care  
357  
Bulb Replacement  
For the proper type of replacement bulbs,  
or any bulb changing procedure not listed in  
this section, contact your dealer.  
Caution  
Do not replace incandescent bulbs with  
aftermarket LED replacement bulbs. This  
can cause damage to the vehicle electrical  
system.  
Hood  
Liftgate  
Halogen Bulbs  
Warning  
{
Headlamp Aiming  
Halogen bulbs have pressurized gas inside  
and can burst if you drop or scratch the  
bulb. You or others could be injured. Be  
sure to read and follow the instructions  
on the bulb package.  
Front Headlamp Aiming  
Headlamp aim has been preset and should  
need no further adjustment.  
If the vehicle is damaged in a crash, the  
headlamp aim may be affected.  
If adjustment to the headlamps is necessary,  
see your dealer.  
LED Lighting  
This vehicle has several LED lamps. For  
replacement of any LED lighting assembly,  
contact your dealer.  
Trunk  
358  
Vehicle Care  
4. Unplug the electrical connector from the  
bulb by releasing the clip on the  
connector.  
1. Stoplamp/Taillamp/Turn Signal Lamp  
2. Back-Up Lamp  
3. Side Marker Lamp  
Headlamps, Front Turn Signal,  
Sidemarker, and Parking Lamps  
Base Level Headlamp Assembly  
5. Replace the bulb and reverse Steps 1–4  
to reinstall.  
Uplevel Taillamp Assembly  
Midlevel and Uplevel  
See your dealer for headlamp replacement.  
Turn Signal Lamp Replacement  
See your dealer for turn signal replacement.  
Taillamps, Turn Signal, Stoplamps,  
and Back-Up Lamps  
Base Level Taillamp Assembly  
1500 shown 2500/3500 similar  
1. Sidemarker lamp  
2. Low-Beam Headlamp  
3. High-Beam Headlamp  
4. Turn Signal/Park Lamps  
1. Back-Up Lamp  
It is recommended to replace the grommets  
when replacing a bulb. See your dealer.  
Headlamp Replacement  
To replace one of these bulbs:  
1. Open the tailgate.  
Base Level  
1. Open the hood.  
2. Remove the headlamp bulb cover.  
3. Turn the bulb socket counterclockwise to  
remove it from the headlamp assembly.  
Vehicle Care  
359  
4. Turn the bulb socket counterclockwise.  
2. Remove the two rear lamp assembly  
screws.  
1. Cargo Lamp Bulbs  
2. Center High-Mounted Stoplamp  
(CHMSL) Bulb  
5. Pull the bulb straight out from the  
socket.  
3. Pull the rear lamp assembly outward and  
rearward away from the box side to  
remove it from the vehicle.  
6. Replace the bulb and reverse Steps 1–5  
to reinstall.  
Center High-Mounted Stoplamp  
(CHMSL) and Cargo Lamp  
This procedure is for the regular cab only.  
For crew cab and double cab see your  
dealer.  
360  
Vehicle Care  
To replace one of these bulbs:  
Fuses and circuit breakers protect the wires  
that provide the power to the devices in  
your vehicle.  
If there is a problem on the road and a fuse  
needs to be replaced, the same amperage  
fuse can be borrowed. Choose some feature  
of the vehicle that is not needed to use and  
replace it as soon as possible.  
To check a fuse, look at the band inside the  
fuse. If the band is broken or melted,  
replace the fuse. Be sure to replace a bad  
fuse with a fuse of the identical size and  
rating.  
3. Replace the bulb and reverse Step 2 to  
reinstall.  
1. Remove the two screws and lift off the  
lamp assembly.  
Electrical System  
2. Turn the bulb socket counterclockwise  
and pull it straight out.  
Electrical System Overload  
The vehicle has fuses and circuit breakers to  
protect against an electrical system  
overload.  
3. Pull the bulb straight out from the  
socket.  
License Plate Lamp  
When the current electrical load is too  
heavy, the circuit breaker opens and closes,  
protecting the circuit until the current load  
returns to normal or the problem is fixed.  
This greatly reduces the chance of circuit  
overload and fire caused by electrical  
problems.  
To replace the bulb:  
1. Reach behind the rear bumper and locate  
the bulb.  
2. Turn the bulb socket counterclockwise  
and pull the bulb straight out of the  
socket.  
Vehicle Care  
361  
4. If the fuse must be replaced  
immediately, spare fuses are also  
provided on the instrument panel end  
cap or borrow a replacement fuse with  
the same amperage from the fuse block.  
Choose a vehicle feature that is not  
needed to safely operate the vehicle.  
Repeat Steps 2-3.  
5. Insert the replacement fuse into the  
empty slot of the blown fuse.  
At the next opportunity, see your dealer to  
replace the blown fuse.  
Replacing a Blown Fuse  
1. Turn off the vehicle.  
Headlamp Wiring  
An electrical overload may cause the lamps  
to go on and off, or in some cases to  
remain off. Have the headlamp wiring  
checked right away if the lamps go on and  
off or remain off.  
2. Locate the fuse puller on the instrument  
panel end cap. See the Instrument Panel  
Fuse Block (Left) 0 365 or  
Instrument Panel Fuse Block (Right)  
0 367.  
Windshield Wipers  
If the wiper motor overheats due to heavy  
snow or ice, the windshield wipers will stop  
until the motor cools and will then restart.  
Although the circuit is protected from  
electrical overload, overload due to heavy  
snow or ice may cause wiper linkage  
3. Use the fuse puller to remove the fuse  
from the top or side, as shown above.  
362  
Vehicle Care  
damage. Always clear ice and heavy snow  
from the windshield before using the  
windshield wipers.  
If the overload is caused by an electrical  
problem and not snow or ice, be sure to get  
it fixed.  
Warning  
{
Fuses and Circuit Breakers  
Installation or use of fuses that do not  
meet GM’s original fuse specifications is  
dangerous. The fuses could fail, and result  
in a fire. You or others could be injured  
or killed, and the vehicle could be  
damaged.  
The wiring circuits in the vehicle are  
protected from short circuits by a  
combination of fuses and circuit breakers.  
This greatly reduces the chance of damage  
caused by electrical problems.  
Press the clips on the sides and lift the  
cover to access the fuse block.  
Danger  
{
Caution  
See Accessories and Modifications 0 333 and  
General Information 0 333.  
Fuses and circuit breakers are marked  
with their ampere rating. Do not exceed  
the specified amperage rating when  
replacing fuses and circuit breakers. Use  
of an oversized fuse or circuit breaker can  
result in a vehicle fire. You and others  
could be seriously injured or killed.  
Spilling liquid on any electrical  
component on the vehicle may damage  
it. Always keep the covers on any  
electrical component.  
To check or replace a blown fuse, see  
Electrical System Overload 0 360.  
Engine Compartment Fuse Block  
If the vehicle has a diesel engine, see the  
Duramax diesel supplement.  
A fuse puller is available in the left  
instrument panel end cap.  
The vehicle may not be equipped with all of  
the fuses, relays, and features shown.  
The engine compartment fuse block is in the  
engine compartment, on the passenger side  
of the vehicle.  
Vehicle Care  
363  
Fuses  
Usage  
6
Exterior Lighting  
Module 7  
7
Exterior Lighting  
Module 4  
8
9
–
Exterior Lighting  
Module 5  
10  
Exterior Lighting  
Module 6  
11  
12  
13  
14  
15  
16  
17  
Body Control Module 2  
Rear Defog  
Washer Front  
–
–
–
IECL 1  
19  
20  
21  
22  
24  
DC/AC Inverter  
IECR 2  
Fuses  
Usage  
Fuses  
Usage  
Headlamp Left  
Headlamp Right  
–
1
–
–
3
IECL 2  
2
4
Fuel Heater  
364  
Vehicle Care  
Fuses  
Usage  
Fuses  
Usage  
Fuses  
Usage  
25  
EBCM – Electronic Brake  
Control Module  
44  
Trailer Integration  
Module/DEFC/ICCM  
Ignition  
57  
TTPM/SBZA – Side Blind  
Zone Alert  
26  
27  
–
58  
60  
61  
Starter Motor  
45  
Secondary Axle Motor  
Horn  
PWR/TRN Sensors 2  
46  
Engine Control Module/  
Transmission Control  
Module/Integrated  
28  
29  
30  
Park Lamp Mirror/Grill  
–
–
62  
DEFC Battery 1/Canister  
Vent Solenoid  
Chassis Control Ignition  
Exterior Lighting  
Module 3  
63  
Trailer Brake Control  
Module  
47  
48  
49  
–
–
31  
Exterior Lighting  
Module 1  
65  
66  
67  
68  
69  
71  
–
Transmission Auxiliary  
Oil Pump  
32  
33  
34  
37  
–
Cooling Fan Motor Left  
–
NOT R/C  
Radars  
50  
51  
A/C Clutch  
DEFC Battery 2  
Starter Pinion  
Cooling Fan  
Transfer Case Control  
Module  
MISC IP Headline  
Ignition  
52  
53  
Front Wiper  
38  
39  
40  
41  
Seat Fan Ignition  
Center High-Mounted  
Stoplamp  
72  
Cooling Fan Right/Lower  
–
73  
Trailer Stop/Turn  
Lamp Left  
54  
55  
56  
–
MISC Body Ignition  
Trailer Parking Lamp  
–
Trailer Back-up Lamp  
74  
75  
Trailer Interface  
Module 2  
SADS – Semi Active  
Damping System  
42  
Integrated Chassis  
Control Module  
Vehicle Care  
365  
Instrument Panel Fuse Block (Left)  
Fuses  
76  
Usage  
Relays  
Usage  
Rear Defog  
Electric Running Board  
Engine Control Module  
Cabin Coll Pump  
5
78  
18  
23  
35  
DC/AC Inverter  
Fuel Heater  
79  
80  
81  
Powertrain Sensor 1  
Park Lamp/Front  
Grille Lamp  
Trailer Stop/Turn Lamp  
Right  
36  
43  
59  
64  
70  
77  
Run/Crank  
82  
83  
Trailer Interface  
Module 1  
Secondary Axle Motor  
A/C Clutch  
FTZM – Fuel Tank Zone  
Starter Motor  
Starter Motor  
Powertrain  
Module  
The left instrument panel fuse block access  
door is on the driver side edge of the  
instrument panel.  
84  
85  
86  
87  
88  
89  
90  
91  
Trailer Battery  
–
Engine Control Module  
Injector B Even  
O2 B Sensor  
O2 A sensor  
Injector A Odd  
–
The vehicle may not be equipped with all of  
the fuses, relays, and features shown.  
Pull off the cover to access the fuse block.  
A fuse puller is available in the left  
instrument panel end cap.  
92  
Aeroshutter  
366  
Vehicle Care  
Fuses  
Usage  
Fuses  
F22  
Usage  
F1  
Rear Heated Seats Left/  
Right  
Rear Sliding Window  
F23  
Driver and Passenger  
Memory Seat Module  
F3  
F4  
F5  
F6  
–
–
F24  
F25  
F26  
F27  
–
–
–
–
Spare  
Heated and Ventilated  
Seats Left/Right  
F8  
F9  
–
Circuit  
Breakers  
Usage  
EOCM – End Object Control  
Module/Park Assist  
CB1  
–
F10  
F11  
–
–
Relays  
K1  
Usage  
F12  
F13  
F14  
F15  
F16  
F17  
Passenger Power Seat  
Rear Sliding Window Open  
Rear Sliding Window Close  
–
K2  
Data Link Connector  
K3  
MFEG – Multifunction  
Endgate Control High  
–
AMP  
K4  
K5  
–
MFEG - Multifunction  
Endgate Control  
MFEG – Multifunction  
Endgate Control Minor  
The vehicle may not be equipped with all of  
the fuses, relays, and features shown.  
F18  
–
K6  
MFEG – Multifunction  
Endgate Control Low  
F20  
Endgate  
Vehicle Care  
367  
Relays  
K7  
Usage  
–
–
K8  
Instrument Panel Fuse Block  
(Right)  
1. Push the tab at the top of fuse  
block down.  
2. Pull the top of the fuse block outward.  
3. Reverse Steps 1–2 to reinstall.  
The right instrument panel fuse block access  
door is on the passenger side edge of the  
instrument panel.  
Pull off the cover to access the front of the  
fuse block.  
To access the back of the fuse block:  
368  
Vehicle Care  
Fuses  
F1  
Usage  
Right Doors  
Fuses  
F19  
Usage  
–
–
–
F2  
Left Doors  
F20  
F21  
F3  
–
F4  
ELM – Exterior Lighting  
Module 2  
F22  
F23  
F24  
F25  
F26  
Heated Steering Wheel  
–
F5  
High Definition localization  
Module/Instrument Panel  
Cluster/Heads-up Display/  
Humidity/Integrated Center  
Stack  
–
Spot Lamp Left/Right  
USB Ports/Special  
Equipment option Retained  
Accessory Power  
F6  
F8  
Front Blower  
F27  
F28  
F30  
Accessory Power Outlet/  
Retained Accessory Power  
Left Front Window Switch  
F10  
Steering Tilt (LD)/Upfitter  
Vehicle Module (HD)  
Accessory Power Outlet/  
Battery  
F11  
F12  
Video Processing Module/  
Overhead Control Camera  
Sensing and Diagnostic  
Module/Automatic  
Occupant Sensing  
Central Gateway Module/  
Telematics Control  
Platform/Column Lock/  
Driver Monitor System  
F31  
F32  
Body Control Module 3  
Back  
Remote Function Actuator/  
Wireless Charging Module/  
Aux Jack/Center Stack  
Module Aux Jack/Trailer  
Brake Control Switch  
F14  
F17  
F18  
–
The vehicle may not be equipped with all of  
the fuses, relays, and features shown.  
Steering Wheel Controls  
–
Vehicle Care  
369  
for information regarding the tire  
Fuses  
F33  
Usage  
Fuses  
F57  
Usage  
warranty and where to get service. For  
additional information refer to the tire  
manufacturer.  
Body Control Module 4  
DC/DC Converter Battery 2  
F34  
F40  
F41  
–
F58  
–
–
Circuit  
Breakers  
Usage  
Warning  
{
–
.
.
Poorly maintained and improperly  
used tires are dangerous.  
F42  
F43  
F44  
F45  
F46  
F47  
F48  
Electric Park Brake Switch  
1
2
3
4
Accessory Power Outlet 1  
–
–
–
–
Overloading the tires can cause  
overheating as a result of too  
much flexing. There could be a  
blowout and a serious crash. See  
Vehicle Load Limits 0 204.  
Shifter Interface Board  
Radio Low  
–
–
Relays  
K1  
Usage  
.
.
Underinflated tires pose the same  
danger as overloaded tires. The  
resulting crash could cause serious  
injury. Check all tires frequently to  
maintain the recommended  
pressure. Tire pressure should be  
checked when the tires are cold.  
–
Transmission Control  
Module  
K2  
Retained Accessory Power/  
Accessory 1  
F49  
F50  
F51  
Body Control Module 1  
K4  
K5  
–
–
–
Battery 1  
F52  
F53  
F54  
F55  
F56  
Battery 2  
Overinflated tires are more likely  
to be cut, punctured, or broken by  
a sudden impact — such as when  
hitting a pothole. Keep tires at the  
recommended pressure.  
Wheels and Tires  
–
Tires  
Sunroof  
Driver Power Seat  
DC/DC Converter Battery 1  
Every new GM vehicle has high-quality  
tires made by a leading tire  
manufacturer. See the warranty manual  
(Continued)  
370  
.
Vehicle Care  
.
.
Use tires of the same brand and tread  
type on all four wheel positions.  
Use only radial ply tires of the same size,  
load range, and speed rating as the  
original equipment tires.  
equipment all-season tires can be identified  
by the last two characters of this TPC code,  
which will be “MS.”  
Warning (Continued)  
Worn or old tires can cause a  
crash. If the tread is badly worn,  
replace them.  
Consider installing winter tires on the  
vehicle if frequent driving on snow or  
ice-covered roads is expected. All-season tires  
provide adequate performance for most  
winter driving conditions, but they may not  
offer the same level of traction or  
Winter tires with the same speed rating as  
the original equipment tires may not be  
available for H, V, W, Y, and ZR speed rated  
tires. If winter tires with a lower speed  
rating are chosen, never exceed the tire's  
maximum speed capability.  
.
Replace any tires that have been  
damaged by impacts with  
potholes, curbs, etc.  
.
performance as winter tires on snow or  
ice-covered roads. See Winter Tires 0 370.  
Improperly repaired tires can cause  
a crash. Only your dealer or an  
authorized tire service center  
should repair, replace, dismount,  
and mount the tires.  
Winter Tires  
This vehicle was not originally equipped  
with winter tires. Winter tires are designed  
for increased traction on snow and  
ice-covered roads. Consider installing winter  
tires on the vehicle if frequent driving on ice  
or snow covered roads is expected. See your  
dealer for details regarding winter tire  
availability and proper tire selection. Also,  
see Buying New Tires 0 383.  
All-Terrain Tires  
This vehicle may have all-terrain or  
mud-terrain tires. These tires provide good  
performance on most road surfaces, weather  
conditions, and for off-road driving. See  
Off-Road Driving 0 197.  
.
Do not spin the tires in excess of  
56 km/h (35 mph) on slippery  
surfaces such as snow, mud, ice,  
etc. Excessive spinning may cause  
the tires to explode.  
The tread pattern on these tires may wear  
more unevenly than other tires. Consider  
rotating the tires more frequently than at  
12 000 km (7,500 mi) intervals if irregular  
wear is noted when the tires are inspected.  
See Tire Inspection 0 381.  
All-Season Tires  
With winter tires, there may be decreased  
dry road traction, increased road noise, and  
shorter tread life. After changing to winter  
tires, be alert for changes in vehicle  
handling and braking.  
This vehicle may come with all-season tires.  
These tires are designed to provide good  
overall performance on most road surfaces  
and weather conditions. Original equipment  
tires designed to GM's specific tire  
performance criteria have a TPC specification  
code molded onto the sidewall. Original  
If using winter tires:  
Vehicle Care  
371  
(2) TPC Spec (Tire Performance Criteria  
Specification) : Original equipment tires  
designed to GM's specific tire  
manufacturer and plant code, tire size,  
and date the tire was manufactured.  
The TIN is molded onto both sides of  
the tire, although only one side may  
have the date of manufacture.  
Tire Sidewall Labeling  
Useful information about a tire is  
molded into its sidewall. The examples  
show a typical passenger vehicle tire/  
full size spare tire, and light truck tire  
sidewall.  
performance criteria have a TPC  
specification code molded onto the  
sidewall. GM's TPC specifications meet  
or exceed all federal safety guidelines.  
(5) Tire Ply Material : The type of cord  
and number of plies in the sidewall and  
under the tread.  
(3) DOT (Department of  
Transportation) : The Department of  
Transportation (DOT) code indicates that  
the tire is in compliance with the U.S.  
Department of Transportation Motor  
Vehicle Safety Standards.  
(6) Uniform Tire Quality Grading  
(UTQG) : Tire manufacturers are  
required to grade tires based on three  
performance factors: treadwear,  
traction, and temperature resistance.  
For more information, see Uniform Tire  
Quality Grading 0 385.  
DOT Tire Date of Manufacture : The last  
four digits of the TIN indicate the tire  
manufactured date. The first two digits  
represent the week and the last two  
digits, the year. For example, the third  
week of the year 2020 would have a  
4-digit DOT date of 0320. Week 01 is  
the first full week (Sunday through  
Saturday) of each year.  
(7) Maximum Cold Inflation Load  
Limit : Maximum load that can be  
carried and the maximum pressure  
needed to support that load. For  
information on recommended tire  
pressure see Tire Pressure 0 375 and  
Vehicle Load Limits 0 204.  
Passenger Tire/Spare Tire  
(1) Tire Size : The tire size code is a  
combination of letters and numbers  
used to define a particular tire's width,  
height, aspect ratio, construction type,  
and service description. See the “Tire  
Size” illustration in this section.  
(4) Tire Identification Number (TIN) :  
The letters and numbers following the  
DOT code are the Tire Identification  
Number (TIN). The TIN shows the  
(8) Temporary Use Only : Only use a  
temporary spare tire until the road tire  
is repaired and replaced. This spare tire  
should not be driven on over 112 km/h  
372  
Vehicle Care  
(70 mph), or 88 km/h (55 mph) when  
pulling a trailer, with the proper  
inflation pressure. See Full-Size Spare  
Tire 0 398.  
specification code molded onto the  
sidewall. GM's TPC specifications meet  
or exceed all federal safety guidelines.  
(5) Tire Identification Number (TIN) :  
The letters and numbers following the  
DOT code are the Tire Identification  
Number (TIN). The TIN shows the  
manufacturer and plant code, tire size,  
and date the tire was manufactured.  
The TIN is molded onto both sides of  
the tire, although only one side may  
have the date of manufacture.  
(3) Dual Tire Maximum Load :  
Maximum load that can be carried and  
the maximum pressure needed to  
support that load when used in a dual  
configuration. For information on  
recommended tire pressure see Tire  
Pressure 0 375 and  
(6) Tire Ply Material : The type of cord  
and number of plies in the sidewall and  
under the tread.  
Vehicle Load Limits 0 204.  
(4) DOT (Department of  
Transportation) : The Department of  
Transportation (DOT) code indicates that  
the tire is in compliance with the U.S.  
Department of Transportation Motor  
Vehicle Safety Standards.  
(7) Single Tire Maximum Load :  
Maximum load that can be carried and  
the maximum pressure needed to  
support that load when used as a  
single. For information on  
recommended tire pressure see Tire  
Pressure 0 375 and  
Light Truck (LT-Metric) Tire  
(1) Tire Size : The tire size code is a  
combination of letters and numbers  
used to define a particular tire's width,  
height, aspect ratio, construction type,  
and service description. See the “Tire  
Size” illustration in this section.  
DOT Tire Date of Manufacture : The last  
four digits of the TIN indicate the tire  
manufactured date. The first two digits  
represent the week and the last two  
digits, the year. For example, the third  
week of the year 2020 would have a  
4-digit DOT date of 0320. Week 01 is  
the first full week (Sunday through  
Saturday) of each year.  
Vehicle Load Limits 0 204.  
Tire Designations  
Tire Size  
(2) TPC Spec (Tire Performance Criteria  
Specification) : Original equipment tires  
designed to GM's specific tire  
The examples show a typical passenger  
vehicle and light truck tire size.  
performance criteria have a TPC  
Vehicle Care  
373  
(4) Construction Code : A letter code is  
used to indicate the type of ply  
construction in the tire. The letter R  
means radial ply construction; the  
letter D means diagonal or bias ply  
construction.  
light truck tire engineered to standards  
set by the U.S. Tire and Rim  
Association.  
(2) Tire Width : The 3-digit number  
indicates the tire section width in  
millimeters from sidewall to sidewall.  
Passenger (P-Metric) Tire  
(5) Rim Diameter : Diameter of the  
wheel in inches.  
(3) Aspect Ratio : A 2-digit number that  
indicates the tire height-to-width  
measurements. For example, if the tire  
size aspect ratio is 75, as shown in  
item (3) of the light truck (LT-Metric)  
tire illustration, it would mean that the  
tire's sidewall is 75 percent as high as it  
is wide.  
(1) Passenger (P-Metric) Tire : The  
United States version of a metric tire  
sizing system. The letter P as the first  
character in the tire size means a  
passenger vehicle tire engineered to  
standards set by the U.S. Tire and Rim  
Association.  
(6) Service Description : These  
characters represent the load index and  
speed rating of the tire. The load index  
represents the load carrying capacity a  
tire is certified to carry. The speed  
rating is the maximum speed a tire is  
certified to carry a load.  
(2) Tire Width : The 3-digit number  
indicates the tire section width in  
millimeters from sidewall to sidewall.  
(4) Construction Code : A letter code is  
used to indicate the type of ply  
construction in the tire. The letter R  
means radial ply construction; the  
letter D means diagonal or bias ply  
construction.  
(3) Aspect Ratio : A 2-digit number that  
indicates the tire height-to-width  
measurements. For example, if the tire  
size aspect ratio is 75, as shown in  
item (3) of the illustration, it would  
mean that the tire's sidewall is  
(5) Rim Diameter : Diameter of the  
wheel in inches.  
Light Truck (LT-Metric) Tire  
(1) Light Truck (LT-Metric) Tire : The  
United States version of a metric tire  
sizing system. The letters LT as the first  
two characters in the tire size mean a  
(6) Load Range : Load Range.  
75 percent as high as it is wide.  
374  
Vehicle Care  
(7) Service Description : The service  
description indicates the load index and  
speed rating of a tire. If two numbers  
are given as in the example, 120/116,  
then this represents the load index for  
single versus dual wheel usage (single/  
dual). The speed rating is the maximum  
speed a tire is certified to carry a load.  
Bias Ply Tire : A pneumatic tire in which  
the plies are laid at alternate angles  
less than 90 degrees to the centerline  
of the tread.  
GAWR RR : Gross Axle Weight Rating  
for the rear axle. See Vehicle Load  
Limits 0 204.  
Intended Outboard Sidewall : The side  
of an asymmetrical tire, that must  
always face outward when mounted on  
a vehicle.  
Cold Tire Pressure : The amount of air  
pressure in a tire, measured in kPa  
(kilopascal) or psi (pounds per square  
inch) before a tire has built up heat  
from driving. See Tire Pressure 0 375.  
Kilopascal (kPa) : The metric unit for air  
pressure.  
Tire Terminology and Definitions  
DOT Markings : A code molded into the  
sidewall of a tire signifying that the tire  
is in compliance with the U.S.  
Department of Transportation (DOT)  
Motor Vehicle Safety Standards. The  
DOT code includes the Tire Identification  
Number (TIN), an alphanumeric  
designator which can also identify the  
tire manufacturer, production plant,  
brand, and date of production.  
Air Pressure : The amount of air inside  
the tire pressing outward on each  
square inch of the tire. Air pressure is  
expressed in kPa (kilopascal) or psi  
(pounds per square inch).  
Light Truck (LT-Metric) Tire : A tire used  
on light duty trucks and some  
multipurpose passenger vehicles.  
Load Index : An assigned number  
ranging from 1 to 279 that corresponds  
to the load carrying capacity of a tire.  
Aspect Ratio : The relationship of a  
tire's height to its width.  
Maximum Inflation Pressure : The  
maximum air pressure to which a cold  
tire can be inflated. The maximum air  
pressure is molded onto the sidewall.  
Belt : A rubber coated layer of cords  
that is located between the plies and  
the tread. Cords may be made from  
steel or other reinforcing materials.  
GVWR : Gross Vehicle Weight Rating.  
See Vehicle Load Limits 0 204.  
Maximum Load Rating : The load rating  
for a tire at the maximum permissible  
inflation pressure for that tire.  
Bead : The tire bead contains steel  
wires wrapped by steel cords that hold  
the tire onto the rim.  
GAWR FRT : Gross Axle Weight Rating  
for the front axle. See Vehicle Load  
Limits 0 204.  
Occupant Distribution : Designated  
seating positions.  
Vehicle Care  
375  
Outward Facing Sidewall : The side of  
an asymmetrical tire that has a  
particular side that faces outward when  
mounted on a vehicle. The side of the  
tire that contains a whitewall, bears  
white lettering, or bears manufacturer,  
brand, and/or model name molding  
that is higher or deeper than the same  
moldings on the other sidewall of  
the tire.  
Sidewall : The portion of a tire between  
the tread and the bead.  
Vehicle Capacity Weight : The number  
of designated seating positions  
multiplied by 68 kg (150 lbs) plus the  
rated cargo load. See Vehicle Load  
Limits 0 204.  
Speed Rating : An alphanumeric code  
assigned to a tire indicating the  
maximum speed at which a tire can  
operate.  
Vehicle Maximum Load on the Tire :  
Load on an individual tire due to curb  
weight, accessory weight, occupant  
weight, and cargo weight.  
Traction : The friction between the tire  
and the road surface. The amount of  
grip provided.  
Vehicle Placard : A label permanently  
attached to a vehicle showing the  
vehicle's capacity weight and the  
original equipment tire size and  
recommended inflation pressure. See  
“Tire and Loading Information Label”  
under Vehicle Load Limits 0 204.  
Tread : The portion of a tire that comes  
into contact with the road.  
Passenger (P-Metric) Tire : A tire used  
on passenger cars and some light duty  
trucks and multipurpose vehicles.  
Treadwear Indicators : Narrow bands,  
sometimes called wear bars, that show  
across the tread of a tire when only  
1.6 mm (1/16 in) of tread remains. See  
When It Is Time for New Tires 0 383.  
Recommended Inflation Pressure :  
Vehicle manufacturer's recommended  
tire inflation pressure as shown on the  
tire placard. See Tire Pressure 0 375 and  
Vehicle Load Limits 0 204.  
Tire Pressure  
Tires need the correct amount of air  
pressure to operate effectively.  
UTQGS (Uniform Tire Quality Grading  
Standards) : A tire information system  
that provides consumers with ratings  
for a tire's traction, temperature, and  
treadwear. Ratings are determined by  
tire manufacturers using government  
testing procedures. The ratings are  
molded into the sidewall of the tire.  
See Uniform Tire Quality Grading 0 385.  
Radial Ply Tire : A pneumatic tire in  
which the ply cords that extend to the  
beads are laid at 90 degrees to the  
centerline of the tread.  
Rim : A metal support for a tire and  
upon which the tire beads are seated.  
376  
Vehicle Care  
Warning  
The Tire and Loading Information label  
on the vehicle indicates the original  
equipment tires and the correct cold  
tire inflation pressures. The  
recommended pressure is the minimum  
air pressure needed to support the  
vehicle's maximum load carrying  
capacity.  
How to Check  
{
Use a good quality pocket-type gauge  
to check tire pressure. Proper tire  
inflation cannot be determined by  
looking at the tire. Check the tire  
inflation pressure when the tires are  
cold, meaning the vehicle has not been  
driven for at least three hours or no  
more than 1.6 km (1 mi).  
Neither tire underinflation nor  
overinflation is good. Underinflated  
tires, or tires that do not have  
enough air, can result in:  
.
Tire overloading and overheating,  
which could lead to a blowout  
For additional information regarding  
how much weight the vehicle can carry,  
and an example of the Tire and Loading  
Information label, see Vehicle Load  
Limits 0 204. How the vehicle is loaded  
affects vehicle handling and ride  
comfort. Never load the vehicle with  
more weight than it was designed to  
carry.  
.
.
.
Premature or irregular wear  
Poor handling  
Remove the valve cap from the tire  
valve stem. Press the tire gauge firmly  
onto the valve to get a pressure  
measurement. If the cold tire inflation  
pressure matches the recommended  
pressure on the Tire and Loading  
Information label, no further adjustment  
is necessary. If the inflation pressure is  
low, add air until the recommended  
pressure is reached. If the inflation  
pressure is high, press on the metal  
stem in the center of the tire valve to  
release air.  
Reduced fuel economy for  
internal combustion engine  
vehicles  
.
Reduced range for electric vehicles  
Overinflated tires, or tires that have  
too much air, can result in:  
When to Check  
.
.
.
.
Unusual wear  
Poor handling  
Rough ride  
Check the pressure of the tires once a  
month or more.  
Do not forget the spare, if the vehicle  
has one. See Full-Size Spare Tire 0 398  
for additional information.  
Needless damage from road  
hazards  
Re-check the tire pressure with the tire  
gauge.  
Vehicle Care  
377  
As an added safety feature, your vehicle has  
been equipped with a tire pressure  
monitoring system (TPMS) that illuminates a  
low tire pressure telltale when one or more  
of your tires is significantly under-inflated.  
sequence will continue upon subsequent  
vehicle start-ups as long as the malfunction  
exists.  
Put the valve caps back on the valve  
stems to keep out dirt and moisture.  
Use only valve caps designed for the  
vehicle by GM. TPMS sensors could be  
damaged and would not be covered by  
the vehicle warranty.  
When the malfunction indicator is  
illuminated, the system may not be able to  
detect or signal low tire pressure as  
intended. TPMS malfunctions may occur for  
a variety of reasons, including the  
installation of replacement or alternate tires  
or wheels on the vehicle that prevent the  
TPMS from functioning properly. Always  
check the TPMS malfunction telltale after  
replacing one or more tires or wheels on  
your vehicle to ensure that the replacement  
or alternate tires and wheels allow the  
TPMS to continue to function properly.  
Accordingly, when the low tire pressure  
telltale illuminates, you should stop and  
check your tires as soon as possible, and  
inflate them to the proper pressure. Driving  
on a significantly under-inflated tire causes  
the tire to overheat and can lead to tire  
failure. Under-inflation also reduces energy  
efficiency and tire tread life, and may affect  
the vehicle's handling and stopping ability.  
Tire Pressure Monitor System  
The Tire Pressure Monitor System (TPMS)  
uses radio and sensor technology to check  
tire pressure levels. The TPMS sensors  
monitor the air pressure in your tires and  
transmit tire pressure readings to a receiver  
located in the vehicle.  
Please note that the TPMS is not a  
substitute for proper tire maintenance, and  
it is the driver's responsibility to maintain  
correct tire pressure, even if under-inflation  
has not reached the level to trigger  
illumination of the TPMS low tire pressure  
telltale.  
Each tire, including the spare (if provided),  
should be checked monthly when cold and  
inflated to the inflation pressure  
recommended by the vehicle manufacturer  
on the vehicle placard or tire inflation  
pressure label. (If your vehicle has tires of a  
different size than the size indicated on the  
vehicle placard or tire inflation pressure  
label, you should determine the proper tire  
inflation pressure for those tires.)  
See Tire Pressure Monitor Operation 0 377.  
See Radio Frequency Statement 0 438.  
Tire Pressure Monitor Operation  
This vehicle may have a Tire Pressure  
Monitor System (TPMS). The TPMS is  
designed to warn the driver when a low tire  
pressure condition exists. TPMS sensors are  
mounted onto each tire and wheel  
assembly, excluding the spare tire and  
wheel assembly. The TPMS sensors monitor  
Your vehicle has also been equipped with a  
TPMS malfunction indicator to indicate when  
the system is not operating properly. The  
TPMS malfunction indicator is combined  
with the low tire pressure telltale. When the  
system detects a malfunction, the telltale  
will flash for approximately one minute and  
then remain continuously illuminated. This  
378  
Vehicle Care  
the air pressure in the tires and transmit the  
tire pressure readings to a receiver located  
in the vehicle.  
displays, see Driver Information Center (DIC)  
(Base Level) 0 127 or  
Driver Information Center (DIC) (Uplevel)  
0 128.  
Caution (Continued)  
sealant is not covered by the vehicle  
warranty. Always use only the GM  
approved tire sealant available through  
your dealer or included in the vehicle.  
The low tire pressure warning light may  
come on in cool weather when the vehicle is  
first started, and then turn off as the vehicle  
is driven. This could be an early indicator  
that the air pressure is getting low and  
needs to be inflated to the proper pressure.  
TPMS Malfunction Light and Message  
The TPMS will not function properly if one  
or more of the TPMS sensors are missing or  
inoperable. When the system detects a  
malfunction, the low tire pressure warning  
light flashes for about one minute and then  
stays on for the remainder of the ignition  
cycle. A DIC warning message also displays.  
The malfunction light and DIC warning  
message come on at each ignition cycle  
until the problem is corrected. Some of the  
conditions that can cause these to come  
on are:  
One of the road tires has been replaced  
with the spare tire. The spare tire does  
not have a TPMS sensor. The malfunction  
light and the DIC message should go off  
after the road tire is replaced and the  
sensor matching process is performed  
successfully. See "TPMS Sensor Matching  
Process" later in this section.  
When a low tire pressure condition is  
detected, the TPMS illuminates the low tire  
pressure warning light located on the  
instrument cluster. If the warning light  
comes on, stop as soon as possible and  
inflate the tires to the recommended  
pressure shown on the Tire and Loading  
Information label. See Vehicle Load Limits  
0 204.  
A Tire and Loading Information label shows  
the size of the original equipment tires and  
the correct inflation pressure for the tires  
when they are cold. See Vehicle Load Limits  
0 204, for an example of the Tire and  
Loading Information label and its location.  
Also see Tire Pressure 0 375.  
The TPMS can warn about a low tire  
pressure condition but it does not replace  
normal tire maintenance. See Tire Inspection  
0 381, Tire Rotation 0 382, and Tires 0 369.  
A message to check the pressure in a  
specific tire displays in the Driver  
.
Information Center (DIC). The low tire  
pressure warning light and the DIC  
warning message come on at each  
ignition cycle until the tires are inflated  
to the correct inflation pressure. If the  
vehicle has DIC buttons, tire pressure levels  
can be viewed. For additional information  
and details about the DIC operation and  
Caution  
Tire sealant materials are not all the  
same. A non-approved tire sealant could  
damage the TPMS sensors. TPMS sensor  
damage caused by using an incorrect tire  
(Continued)  
Vehicle Care  
379  
.
The TPMS sensor matching process was  
not done or not completed successfully  
after rotating the tires. The malfunction  
light and the DIC message should go off  
after successfully completing the sensor  
matching process. See "TPMS Sensor  
Matching Process" later in this section.  
One or more TPMS sensors are missing or  
damaged. The malfunction light and the  
DIC message should go off when the  
TPMS sensors are installed and the sensor  
matching process is performed  
Tire Fill Alert (If Equipped)  
Warning (Continued)  
This feature provides visual and audible  
alerts outside the vehicle to help when  
inflating an underinflated tire to the  
recommended cold tire pressure.  
pressure listed on the tire sidewall. See  
Tire Sidewall Labeling 0 371 and  
Vehicle Load Limits 0 204.  
When the low tire pressure warning light  
comes on:  
If the tire is overinflated by more than  
.
.
.
35 kPa (5 psi), the horn will sound multiple  
times and the turn signal lamp will continue  
to flash for several seconds after filling  
stops. To release and correct the pressure,  
while the turn signal lamp is still flashing,  
briefly press the center of the valve stem.  
When the recommended pressure is reached,  
the horn sounds once.  
1. Park the vehicle in a safe, level place.  
2. Set the parking brake firmly.  
3. Place the vehicle in P (Park).  
4. Add air to the tire that is underinflated.  
The turn signal lamp will flash.  
successfully. See your dealer for service.  
Replacement tires or wheels do not match  
the original equipment tires or wheels.  
Tires and wheels other than those  
recommended could prevent the TPMS  
from functioning properly. See Buying  
New Tires 0 383.  
Operating electronic devices or being near  
facilities using radio wave frequencies  
similar to the TPMS could cause the TPMS  
sensors to malfunction.  
When the recommended pressure is  
reached, the horn sounds once and the  
turn signal lamp will stop flashing and  
briefly turn solid.  
If the turn signal lamp does not flash within  
15 seconds after starting to inflate the tire,  
the tire fill alert has not been activated or is  
not working.  
Repeat these steps for all underinflated tires  
that have illuminated the low tire pressure  
warning light.  
If the hazard warning flashers are on, the  
tire fill alert visual feedback will not work  
properly.  
Warning  
{
The TPMS will not activate the tire fill alert  
properly under the following conditions:  
There is interference from an external  
device or transmitter.  
The air pressure from the inflation device  
is not sufficient to inflate the tire.  
If the TPMS is not functioning properly, it  
cannot detect or signal a low tire pressure  
condition. See your dealer for service if the  
TPMS malfunction light and DIC message  
come on and stay on.  
Overinflating a tire could cause the tire  
to rupture and you or others could be  
injured. Do not exceed the maximum  
(Continued)  
.
.
380  
Vehicle Care  
.
.
There is a malfunction in the TPMS.  
There is a malfunction in the horn or turn  
signal lamps.  
The identification code of the TPMS  
sensor is not registered to the system.  
The battery of the TPMS sensor is low.  
Driver Information Center (DIC) (Uplevel)  
0 128. A warning message displays in the  
DIC if a problem occurs during the relearn  
process.  
.
Trailer Tire Pressure Monitoring  
Operation  
.
If the tire fill alert does not operate due to  
TPMS interference, move the vehicle about  
1 m (3 ft) back or forward and try again.  
If the tire fill alert feature is not working,  
use a tire pressure gauge.  
If equipped, the Trailer Tire Pressure  
Monitoring System (TTPMS) is designed to  
monitor the pressure of the trailer tires and  
warn the driver when a low pressure  
condition exists. TTPMS sensors for four tires  
are provided. The system can accommodate  
a trailer with up to six tires if additional  
sensors are purchased from the dealer. Also,  
the system can be paired with up to five  
individual trailers.  
TPMS Sensor Matching Process — Auto  
Learn Function  
Contact your trailer service center or tire  
service center to have the pressure sensors  
installed inside the trailer tires. The  
technician should insert the sensor stem  
through the hole in the trailer wheel. When  
the sensor is correctly positioned, the nut on  
the sensor stem should be tightened to  
8 Y (6 lb ft). When mounting the trailer  
tire onto the trailer wheel be careful not to  
damage the sensor.  
Each TPMS sensor has a unique  
identification code. The identification code  
needs to be matched to a new tire/wheel  
position after rotating the tires or replacing  
one or more of the TPMS sensors. When a  
tire is installed, the vehicle must be  
stationary for about 20 minutes before  
the system recalculates. The following  
relearn process takes up to 10 minutes,  
driving at a minimum speed of 20 km/h  
(12 mph). A dash (-) or pressure value will  
display in the DIC. See Driver Information  
Center (DIC) (Base Level) 0 127 or  
Prior to use, the vehicle must learn the  
sensors by following the learning process.  
See Trailering App 0 319.  
The Trailering App can be used to view the  
tire pressures after the recommended trailer  
tire pressures have been entered. Refer to  
the trailer tire placard on the trailer or the  
trailer tire sidewall for the recommended  
tire pressure.  
Vehicle Care  
381  
The system is compatible with trailer tires  
that have placard pressure values from 103 -  
689 kpa (15 - 100 psi). The hole in the wheel  
for the tire stem must be either 11.43 mm  
(0.453 in) or 15.88 mm (0.625 in) in  
diameter. Use of the pressure sensors on a  
wheel with a different stem hole size could  
result in loss of air from the tire.  
performed successfully. See "TTPMS  
Sensor Learning Process" under Trailering  
App 0 319.  
Operating electronic devices or being near  
facilities using radio wave frequencies  
similar to the TTPMS could cause  
interference to the TTPMS which could  
cause loss of signal reception from the  
sensor.  
If the system does not receive the signal  
from an individual sensor, an error  
message may not occur until the vehicle  
has been driver for a period of time.  
TTPMS Malfunction Message  
The TTPMS will not function properly if one  
or more of the trailer tire sensors are  
missing or inoperable. If the system detects  
a malfunction, a DIC message indicates that  
the system requires service. Some of the  
conditions that can cause the service  
message to occur are:  
.
.
If a low trailer tire pressure condition is  
detected, the TTPMS displays a warning  
message on the DIC. If the warning message  
is displayed, stop as soon as possible and  
inflate the tires to the recommended  
pressure shown on the tire placard on the  
trailer.  
.
One of the trailer tires has been replaced  
with the spare tire which does not have a  
learned TTPMS sensor. The DIC message  
should turn off after the pressure sensor  
is installed in the tire, and the learning  
process is performed successfully. See  
"TTPMS Sensor Learning Process" under  
Trailering App 0 319.  
If the TTPMS is not functioning properly, it  
cannot detect or signal a low tire condition.  
See your dealer for service if the DIC  
message comes on and stays on when the  
trailer tire pressures have been checked and  
determined to be correct.  
In addition, the TTPMS monitors the  
temperature of the trailer tires. If the  
system detects a high temperature on one  
or more of the trailer tires, a warning  
message will be displayed on the DIC. If this  
warning message is displayed, stop as soon  
as possible, and inspect the overheated  
trailer tire. Common causes for high trailer  
tire temperature are underinflation,  
overloading, or tire damage.  
.
.
The TTPMS sensor learning process was  
not done or not completed successfully.  
The DIC message should go off after  
successfully completing the sensor  
learning process. See "TTPMS Sensor  
Learning Process" under Trailering App  
0 319.  
One or more TTPMS sensors are missing  
or damaged. The DIC message should go  
off when the TTPMS sensors are installed  
and the sensor learning process is  
Tire Inspection  
We recommend that the tires, including  
the spare tire, if the vehicle has one, be  
inspected for signs of wear or damage  
at least once a month.  
Replace the tire if:  
.
The indicators at three or more  
places around the tire can be seen.  
382  
Vehicle Care  
.
There is cord or fabric showing  
through the tire's rubber.  
The tread or sidewall is cracked, cut,  
or snagged deep enough to show  
cord or fabric.  
See When It Is Time for New Tires  
0 383 and  
Wheel Replacement 0 386.  
Reset the Tire Pressure Monitor System.  
See Tire Pressure Monitor Operation  
0 377.  
.
Check that all wheel nuts are properly  
tightened. See “Wheel Nut Torque”  
under Capacities and Specifications  
0 426 and “Removing the Flat Tire and  
Installing the Spare Tire” under Tire  
Changing 0 389.  
.
.
The tire has a bump, bulge, or split.  
The tire has a puncture, cut, or other  
damage that cannot be repaired well  
because of the size or location of the  
damage.  
Warning  
{
Tire Rotation  
Rust or dirt on a wheel, or on the  
parts to which it is fastened, can  
cause wheel nuts to become loose  
over time. The wheel could come off  
and cause a crash. When changing a  
wheel, remove any rust or dirt from  
places where the wheel attaches to  
the vehicle. In an emergency, a cloth  
or paper towel can be used; however,  
use a scraper or wire brush later to  
remove all rust or dirt.  
Tires should be rotated according to the  
interval listed in the maintenance  
schedule. See Maintenance Schedule  
0 417.  
Use this rotation pattern when rotating  
the tires.  
Tires are rotated to achieve a more  
uniform wear for all tires. The first  
rotation is the most important.  
Do not include the spare tire in the tire  
rotation.  
Adjust the front and rear tires to the  
recommended inflation pressure on the  
Tire and Loading Information label after  
the tires have been rotated. See Tire  
Pressure 0 375 and  
Anytime unusual wear is noticed, rotate  
the tires as soon as possible, check for  
proper tire inflation pressure, and check  
for damaged tires or wheels. If the  
unusual wear continues after the  
Vehicle Load Limits 0 204.  
rotation, check the wheel alignment.  
Vehicle Care  
383  
Number (TIN) molded into one side of the  
tire sidewall. The last four digits of the TIN  
indicate the tire manufactured date. The  
first two digits represent the week and the  
last two digits, the year. For example, the  
third week of the year 2020 would have a  
4-digit DOT date of 0320. Week 01 is the  
first full week (Sunday through Saturday) of  
each year.  
Lightly coat the inner diameter of the  
wheel hub opening with wheel bearing  
grease after a wheel change or tire  
rotation to prevent corrosion or rust  
build-up.  
Warning  
{
Do not apply grease to the wheel  
mounting surface, wheel conical  
seats, or the wheel nuts or bolts.  
Grease applied to these areas could  
cause a wheel to become loose or  
come off, resulting in a crash.  
Vehicle Storage  
Tires age when stored normally mounted on  
a parked vehicle. Park a vehicle that will be  
stored for at least a month in a cool, dry,  
clean area away from direct sunlight to slow  
aging. This area should be free of grease,  
gasoline, or other substances that can  
deteriorate rubber.  
Treadwear indicators are one way to tell  
when it is time for new tires. Treadwear  
indicators appear when the tires have only  
1.6 mm (1/16 in) or less of tread remaining.  
See Tire Inspection 0 381 and  
When It Is Time for New Tires  
Factors, such as maintenance, temperatures,  
driving speeds, vehicle loading, and road  
conditions affect the wear rate of the tires.  
Tire Rotation 0 382.  
Parking for an extended period can cause  
flat spots on the tires that may result in  
vibrations while driving. When storing a  
vehicle for at least a month, remove the  
tires or raise the vehicle to reduce the  
weight from the tires.  
The rubber in tires ages over time. This also  
applies to the spare tire, if the vehicle has  
one, even if it is never used. Multiple factors  
including temperatures, loading conditions,  
and inflation pressure maintenance affect  
how fast aging takes place. GM recommends  
that tires, including the spare if equipped,  
be replaced after six years, regardless of  
tread wear. To identify the age of a tire, use  
the tire manufacture date, which is the last  
four digits of the DOT Tire Identification  
Buying New Tires  
GM has developed and matched specific  
tires for the vehicle. The original  
equipment tires installed were designed  
384  
Vehicle Care  
to meet General Motors Tire  
replaced at the same time. If proper  
rotation and maintenance have been  
done, all four tires should wear out at  
about the same time. However, if it is  
necessary to replace only one axle set  
of worn tires, place the new tires on  
the rear axle. See Tire Rotation 0 382.  
Warning  
{
Performance Criteria Specification (TPC  
Spec) system rating. When replacement  
tires are needed, GM strongly  
recommends buying tires with the same  
TPC Spec rating.  
Using bias-ply tires on the vehicle  
may cause the wheel rim flanges to  
develop cracks after many miles of  
driving. A tire and/or wheel could fail  
suddenly and cause a crash. Use only  
radial-ply tires with the wheels on  
the vehicle.  
GM's exclusive TPC Spec system  
considers over a dozen critical  
Warning  
{
specifications that impact the overall  
performance of the vehicle, including  
brake system performance, ride and  
handling, traction control, and tire  
pressure monitoring performance. GM's  
TPC Spec number is molded onto the  
tire's sidewall near the tire size. If the  
tires have an all-season tread design,  
the TPC Spec number will be followed  
by MS for mud and snow. See Tire  
Sidewall Labeling 0 371 for additional  
information.  
Tires could explode during improper  
service. Attempting to mount or  
dismount a tire could cause injury or  
death. Only your dealer or authorized  
tire service center should mount or  
dismount the tires.  
Winter tires with the same speed rating  
as the original equipment tires may not  
be available for H, V, W, Y and ZR  
speed rated tires. Never exceed the  
winter tires’ maximum speed capability  
when using winter tires with a lower  
speed rating.  
Warning  
{
If the vehicle tires must be replaced  
with a tire that does not have a TPC  
Spec number, make sure they are the  
same size, load range, speed rating, and  
construction (radial) as the original  
tires.  
Mixing tires of different sizes (other  
than those originally installed on the  
vehicle), brands, tread patterns,  
GM recommends replacing worn tires in  
complete sets of four. Uniform tread  
depth on all tires will help to maintain  
the performance of the vehicle. Braking  
and handling performance may be  
or types may cause loss of vehicle  
control, resulting in a crash or other  
vehicle damage. Use the correct size,  
brand, and type of tire on all wheels.  
The Tire and Loading Information label  
indicates the original equipment tires  
on the vehicle. See Vehicle Load Limits  
0 204.  
adversely affected if all the tires are not  
Vehicle Care  
385  
Quality grades can be found where  
Different Size Tires and Wheels  
Uniform Tire Quality Grading  
The following information relates to the  
system developed by the United States  
National Highway Traffic Safety  
Administration (NHTSA), which grades  
tires by treadwear, traction, and  
temperature performance. This applies  
only to vehicles sold in the United  
States. The grades are molded on the  
sidewalls of most passenger car tires.  
The Uniform Tire Quality Grading  
(UTQG) system does not apply to deep  
tread, winter tires, compact spare tires,  
tires with nominal rim diameters of  
10 to 12 inches (25 to 30 cm), or to some  
limited-production tires.  
applicable on the tire sidewall between  
tread shoulder and maximum section  
width. For example:  
If wheels or tires are installed that are a  
different size than the original equipment  
wheels and tires, vehicle performance,  
including its braking, ride and handling  
characteristics, stability, and resistance to  
rollover may be affected. If the vehicle has  
electronic systems such as antilock brakes,  
rollover airbags, traction control, electronic  
stability control, or All-Wheel Drive, the  
performance of these systems can also be  
affected.  
Treadwear 200 Traction AA Temperature A  
All Passenger Car Tires Must Conform to  
Federal Safety Requirements In Addition  
To These Grades.  
Treadwear  
The treadwear grade is a comparative  
rating based on the wear rate of the  
tire when tested under controlled  
conditions on a specified government  
test course. For example, a tire graded  
150 would wear one and one-half (1½)  
times as well on the government course  
as a tire graded 100. The relative  
performance of tires depends upon the  
actual conditions of their use, however,  
and may depart significantly from the  
norm due to variations in driving habits,  
service practices and differences in road  
characteristics and climate.  
Warning  
{
If different sized wheels are used, there  
may not be an acceptable level of  
performance and safety if tires not  
recommended for those wheels are  
selected. This increases the chance of a  
crash and serious injury. Only use GM  
specific wheel and tire systems developed  
for the vehicle, and have them properly  
installed by a GM certified technician.  
While the tires available on General  
Motors passenger cars and light trucks  
may vary with respect to these grades,  
they must also conform to federal  
safety requirements and additional  
General Motors Tire Performance  
Criteria (TPC) standards.  
See Buying New Tires 0 383 and  
Accessories and Modifications 0 333.  
386  
Vehicle Care  
such as troughs or ruts, is normal. If the  
vehicle is vibrating when driving on a  
smooth road, the tires and wheels may  
need to be rebalanced. See your dealer for  
proper diagnosis.  
Traction  
corresponds to a level of performance  
which all passenger car tires must meet  
under the Federal Motor Safety  
The traction grades, from highest to  
lowest, are AA, A, B, and C. Those  
grades represent the tire's ability to  
stop on wet pavement as measured  
under controlled conditions on specified  
government test surfaces of asphalt and  
concrete. A tire marked C may have  
poor traction performance. Warning:  
The traction grade assigned to this tire  
is based on straight-ahead braking  
traction tests, and does not include  
acceleration, cornering, hydroplaning,  
or peak traction characteristics.  
Standard No. 109. Grades B and A  
represent higher levels of performance  
on the laboratory test wheel than the  
minimum required by law. Warning:  
The temperature grade for this tire is  
established for a tire that is properly  
inflated and not overloaded. Excessive  
speed, underinflation, or excessive  
loading, either separately or in  
Wheel Replacement  
Replace any wheel that is bent, cracked,  
or badly rusted or corroded. If wheel nuts  
keep coming loose, the wheel, wheel bolts,  
and wheel nuts should be replaced. If the  
wheel leaks air, replace it. Some aluminum  
wheels can be repaired. See your dealer if  
any of these conditions exist.  
combination, can cause heat buildup  
and possible tire failure.  
Your dealer will know the kind of wheel that  
is needed.  
Wheel Alignment and Tire  
Balance  
The tires and wheels were aligned and  
balanced at the factory to provide the  
longest tire life and best overall  
Temperature  
Each new wheel should have the same  
load-carrying capacity, diameter, width,  
offset, and be mounted the same way as  
the one it replaces.  
The temperature grades are A (the  
highest), B, and C, representing the  
tire's resistance to the generation of  
heat and its ability to dissipate heat  
when tested under controlled conditions  
on a specified indoor laboratory test  
wheel. Sustained high temperature can  
cause the material of the tire to  
Replace wheels, wheel bolts, wheel nuts,  
or Tire Pressure Monitor System (TPMS)  
sensors with new GM original equipment  
parts.  
performance. Adjustments to wheel  
alignment and tire balancing are not  
necessary on a regular basis. Consider an  
alignment check if there is unusual tire wear  
or the vehicle is significantly pulling to one  
side or the other. Some slight pull to the  
left or right, depending on the crown of the  
road and/or other road surface variations  
degenerate and reduce tire life, and  
excessive temperature can lead to  
sudden tire failure. The grade C  
Vehicle Care  
Caution  
If the vehicle is equipped with a tire size  
other than 275/50R22, 275/60R20,  
387  
Tire Chains  
Warning  
{
Using the wrong replacement wheels,  
wheel bolts, or wheel nuts can be  
dangerous. It could affect the braking and  
handling of the vehicle. Tires can lose air  
and cause loss of control, resulting in a  
crash. Always use the correct wheel,  
wheel bolts, and wheel nuts for  
replacement.  
Warning  
{
If the vehicle has 275/50R22, 275/60R20,  
LT265/60R20, LT265/70R17, LT275/65R18,  
or LT275/70R18 size tires, do not use tire  
chains. There is not enough clearance.  
Tire chains used on a vehicle without the  
proper amount of clearance can cause  
damage to the brakes, suspension,  
or other vehicle parts. The area damaged  
by the tire chains could cause loss of  
control and a crash.  
LT265/60R20, LT265/70R17, LT275/65R18,  
or LT275/70R18 use tire chains only where  
legal and only when necessary. Use  
chains that are the proper size for the  
tires. Install them on the tires of the rear  
axle. Do not use chains on the tires of  
the front axle. Tighten them as tightly as  
possible with the ends securely fastened.  
Drive slowly and follow the chain  
manufacturer's instructions. If the chains  
contact the vehicle, stop and retighten  
them. If the contact continues, slow  
down until it stops. Driving too fast or  
spinning the wheels with chains on will  
damage the vehicle.  
Warning  
{
Replacing a wheel with a used one is  
dangerous. How it has been used or how  
far it has been driven may be unknown.  
It could fail suddenly and cause a crash.  
When replacing wheels, use a new GM  
original equipment wheel.  
Use another type of traction device only  
if its manufacturer recommends it for the  
vehicle's tire size combination and road  
conditions. Follow that manufacturer's  
instructions. To avoid vehicle damage,  
drive slow and readjust or remove the  
traction device if it contacts the vehicle.  
Do not spin the wheels.  
If a Tire Goes Flat  
Caution  
It is unusual for a tire to blow out while  
driving, especially if the tires are maintained  
properly. See Tires 0 369. If air goes out of  
a tire, it is much more likely to leak out  
slowly. But if there ever is a blowout, here  
are a few tips about what to expect and  
what to do:  
The wrong wheel can also cause  
If traction devices are used, install them  
on the rear tires.  
problems with bearing life, brake cooling,  
speedometer or odometer calibration,  
headlamp aim, bumper height, vehicle  
ground clearance, and tire or tire chain  
clearance to the body and chassis.  
388  
Vehicle Care  
If a front tire fails, the flat tire creates a  
drag that pulls the vehicle toward that side.  
Take your foot off the accelerator pedal and  
grip the steering wheel firmly. Steer to  
maintain lane position, and then gently  
brake to a stop, well off the road,  
if possible.  
Warning  
Warning  
{
{
Lifting a vehicle and getting under it to  
do maintenance or repairs is dangerous  
without the appropriate safety equipment  
and training. If a jack is provided with  
the vehicle, it is designed only for  
changing a flat tire. If it is used for  
anything else, you or others could be  
badly injured or killed if the vehicle slips  
off the jack. If a jack is provided with the  
vehicle, only use it for changing a  
flat tire.  
Changing a tire can be dangerous. The  
vehicle can slip off the jack and roll over  
or fall causing injury or death. Find a  
level place to change the tire. To help  
prevent the vehicle from moving:  
A rear blowout, particularly on a curve, acts  
much like a skid and may require the same  
correction as used in a skid. Stop pressing  
the accelerator pedal and steer to straighten  
the vehicle. It may be very bumpy and  
noisy. Gently brake to a stop, well off the  
road, if possible.  
1. Set the parking brake firmly.  
2. Shift the vehicle to P (Park).  
3. For vehicles with four-wheel drive  
with an N (Neutral) transfer case  
position, be sure the transfer case is  
in a drive gear — not in N (Neutral).  
If a tire goes flat, avoid further tire and  
wheel damage by driving slowly to a level  
place, well off the road, if possible. Turn on  
the hazard warning flashers. See Hazard  
Warning Flashers 0 141.  
4. Turn off the engine and do not  
restart while the vehicle is raised.  
Warning  
{
Driving on a flat tire will cause  
permanent damage to the tire.  
5. Do not allow passengers to remain  
in the vehicle.  
Re-inflating a tire after it has been driven  
on while severely underinflated or flat  
may cause a blowout and a serious crash.  
Never attempt to re-inflate a tire that has  
been driven on while severely  
underinflated or flat. Have your dealer or  
an authorized tire service center repair or  
replace the flat tire as soon as possible.  
6. Place wheel blocks, if equipped, on  
both sides of the tire at the opposite  
corner of the tire being changed.  
If your vehicle is loaded at or near  
maximum cargo capacity, it may be difficult  
to fit the jack under the vehicle due to the  
environment (shoulder slope, road debris,  
etc.). Removal of some weight may improve  
the ability to fit the jack under the vehicle  
at the correct jacking location.  
Vehicle Care  
389  
When the vehicle has a flat tire (2), use the  
following example as a guide to assist in the  
placement of the wheel blocks (1),  
if equipped.  
2. Turn the wing nut counterclockwise to  
remove the wheel blocks and the wheel  
block retainer.  
Tire Changing  
Removing the Spare Tire and Tools  
3. Turn the wing nut used to retain the  
storage bag and tools counterclockwise  
to remove it.  
Use the jack handle extensions and the  
wheel wrench to remove the  
underbody-mounted spare tire.  
1. Wheel Block (If Equipped)  
2. Flat Tire  
1. Jack  
2. Jack Knob  
The following information explains how to  
use the jack and change a tire.  
3. Tool Kit  
4. Wing Nut Retaining Tool Kit  
5. Wheel Blocks  
6. Wing Nut Retaining Wheel Blocks  
1. Spare Tire (Valve Stem Pointed Down)  
2. Tire/Wheel Retainer  
3. Hoist Cable  
The equipment is under the second row  
seats, if equipped, or behind the front row  
seats on regular cab models.  
4. Hoist Assembly  
5. Hoist Shaft  
6. Jack Handle Extensions  
1. Turn the knob on the jack  
counterclockwise to lower the jack head  
to release the jack from its holder.  
390  
Vehicle Care  
7. Wheel Wrench  
8. Hoist Shaft Access Hole Cover  
9. Hoist Shaft Access Hole  
4. Insert the hoist end (open end) (10) of  
the extension through the hole (9) in the  
rear bumper.  
10. Hoist End of Extension Tool  
Do not use the chiseled end of the wheel  
wrench.  
1. Open the Hoist Shaft Access Hole Cover  
on the rear bumper (8).  
Be sure the hoist end of the  
extension (10) connects to the hoist  
shaft. The ribbed square end of the  
extension is used to lower the spare tire.  
5. Turn the wheel wrench counterclockwise  
to lower the spare tire to the ground.  
Continue to turn the wheel wrench until  
the spare tire can be pulled out from  
under the vehicle.  
Spare Tire Cable (If Equipped)  
3. If the vehicle is equipped with a spare  
tire cable disconnect the cable from the  
attachment on the frame by unclipping  
it from the frame attachment bracket.  
6. Pull the spare tire out from under the  
vehicle.  
2. Assemble the wheel wrench (7) and the  
two jack handle extensions (6), as shown.  
7. Tilt the tire toward the vehicle with  
some slack in the cable to access the  
tire/wheel retainer.  
Vehicle Care  
391  
9. If equipped with a spare tire cable  
remove the cable from the spare tire by  
passing the clip through the looped end  
of the cable.  
The tools you will be using include the  
jack (1), the wheel blocks (2), the jack  
handle (3), the jack handle extensions (4),  
and the wheel wrench (5).  
1. Do a safety check before proceeding. See  
If a Tire Goes Flat 0 387.  
Removing the Flat Tire and Installing the  
Spare Tire  
Use the following pictures and instructions  
to remove the flat tire and raise the vehicle.  
Tilt the retainer and pull it through the  
center of the wheel along with the cable  
and spring.  
8. Put the spare tire near the flat tire.  
2. If the vehicle has wheel nut caps, loosen  
them by turning the wheel wrench  
counterclockwise.  
1. Jack  
2. Wheel Blocks  
3. Jack Handle  
4. Jack Handle Extensions  
5. Wheel Wrench  
If the vehicle has a center cap with  
wheel nut caps, the wheel nut caps are  
designed to stay with the center cap  
after they are loosened. Remove the  
entire center cap.  
392  
Vehicle Care  
If the wheel has a smooth center cap,  
concealing access to the wheel nuts,  
place the chisel end of the wheel wrench  
in the slot on the wheel, and gently pry  
it out.  
Front Position  
3. Use the wheel wrench and turn it  
counterclockwise to loosen the wheel  
nuts. Do not remove the wheel nuts yet.  
4. If the flat tire is on the front of the  
vehicle, position the jack under the  
bracket attached to the vehicle's frame,  
behind the flat tire, as shown.  
If the wheel’s center cap does not  
conceal the wheel nuts, the center cap  
may remain during wheel removal. If the  
removed wheel is to be stowed in the  
hoist, the cap needs to be detached from  
the wheel. Access the wheel from the  
back side, and use a jack handle  
Warning  
{
To avoid personal injury and vehicle  
damage, disable the power assist steps  
before using a jack or placing an object  
under the vehicle. See Power Assist Steps  
0 28.  
extension to push out the center cap.  
Vehicle Care  
393  
Warning  
{
Raising the vehicle with the jack  
improperly positioned can damage the  
vehicle and even make the vehicle fall. To  
help avoid personal injury and vehicle  
damage, be sure to fit the jack lift head  
into the proper location before raising  
the vehicle.  
Warning  
{
Rear Position  
7. Remove all the wheel nuts and take off  
the flat tire.  
The jack has a feature to limit its travel  
to prevent overextension. When the  
height limit is reached, an increase in  
resistance if felt when attempting to  
raise the jack farther. Raising the jack  
past the height limit can damage the jack  
pin and cause the jack to lock into an  
overextended position or not lower fully.  
Do not attempt to force the jack higher  
once the height limit is reached.  
5. If the flat tire is on the rear, position the  
jack under the rear axle about 5 cm  
(2 in) inboard of the shock absorber  
bracket.  
Warning  
{
Rust or dirt on a wheel, or on the  
parts to which it is fastened, can  
cause wheel nuts to become loose  
over time. The wheel could come off  
and cause a crash. When changing a  
wheel, remove any rust or dirt from  
places where the wheel attaches to  
the vehicle. In an emergency, a cloth  
or paper towel can be used; however,  
use a scraper or wire brush later to  
remove all rust or dirt.  
Warning  
{
Getting under a vehicle when it is lifted  
on a jack is dangerous. If the vehicle slips  
off the jack, you could be badly injured  
or killed. Never get under a vehicle when  
it is supported only by a jack.  
6. Turn the wheel wrench clockwise to raise  
the vehicle. Raise the vehicle far enough  
off the ground so there is enough room  
for the spare tire to fit under the  
wheel well.  
394  
Vehicle Care  
11. Tighten each wheel nut by hand. Then  
use the wheel wrench to tighten the  
nuts until the wheel is held against  
the hub.  
Warning  
{
Wheel nuts that are improperly or  
incorrectly tightened can cause the  
wheels to become loose or come off. The  
wheel nuts should be tightened with a  
torque wrench to the proper torque  
specification after replacing. Follow the  
torque specification supplied by the  
aftermarket manufacturer when using  
accessory locking wheel nuts. See  
Capacities and Specifications 0 426 for  
original equipment wheel nut torque  
specifications.  
12. Turn the wheel wrench counterclockwise  
to lower the vehicle. Lower the jack  
completely.  
Warning  
{
If wheel studs are damaged, they can  
break. If all the studs on a wheel broke,  
the wheel could come off and cause a  
crash. If any stud is damaged because of  
a loose-running wheel, it could be that all  
of the studs are damaged. To be sure,  
replace all studs on the wheel. If the stud  
holes in a wheel have become larger, the  
wheel could collapse in operation. Replace  
any wheel if its stud holes have become  
larger or distorted in any way. Inspect  
hubs and hub‐piloted wheels for damage.  
Because of loose running wheels, piloting  
pad damage may occur and require  
8. Remove any rust or dirt from the wheel  
bolts, mounting surfaces, and spare  
wheel.  
9. Install the spare tire.  
Caution  
Improperly tightened wheel nuts can lead  
to brake pulsation and rotor damage. To  
avoid expensive brake repairs, evenly  
tighten the wheel nuts in the proper  
sequence and to the proper torque  
specification. See Capacities and  
Warning  
{
Never use oil or grease on bolts or nuts  
because the nuts might come loose. The  
vehicle's wheel could fall off, causing a  
crash.  
Specifications 0 426 for the wheel nut  
torque specification.  
replacement of the entire hub, for proper  
centering of the wheels. When replacing  
studs, hubs, wheel nuts or wheels, be  
sure to use GM original equipment parts.  
10. Put the wheel nuts back on with the  
rounded end of the nuts toward the  
wheel.  
Vehicle Care  
Caution  
395  
Storing a Flat or Spare Tire and Tools  
The tire hoist can be damaged if there is  
no tension on the cable when using it. To  
have the necessary tension, the spare or  
road tire and wheel assembly must be  
installed on the tire hoist to use it.  
Warning  
{
Storing a jack, a tire, or other equipment  
in the passenger compartment of the  
vehicle could cause injury. In a sudden  
stop or collision, loose equipment could  
strike someone. Store all these in the  
proper place.  
Warning  
{
13. Tighten the nuts firmly in a crisscross  
sequence, as shown, by turning the  
wheel wrench clockwise.  
An improperly stored spare tire could  
come loose and cause a crash. To avoid  
personal injury or property damage,  
always store the spare tire when the  
vehicle is parked on a level surface.  
Warning  
{
When reinstalling the regular wheel and tire,  
also reinstall either the center cap,  
Failure to follow these tire storage  
instructions carefully could result in  
personal injury or property damage if the  
hoist cable fails or if the tire comes loose.  
Make sure the tire is stored securely  
before driving.  
or bolt-on hub cap, depending on what the  
vehicle is equipped with. For center caps,  
place the cap on the wheel and tap it into  
place until it seats flush with the wheel. The  
cap only goes on one way. Be sure to line  
up the tab on the center cap with the  
indentation on the wheel. For bolt-on hub  
caps, align the plastic nut caps with the  
wheel nuts and then tighten by hand. Then  
use the wheel wrench to tighten.  
Store the tire under the rear of the vehicle  
in the spare tire carrier.  
Caution  
Storing an aluminum wheel with a flat  
tire under your vehicle for an extended  
period of time or with the valve stem  
pointing up can damage the wheel.  
Always stow the wheel with the valve  
stem pointing down and have the wheel/  
tire repaired as soon as possible.  
396  
Vehicle Care  
cable through the looped end. The excess  
cable wire should be on the valve stem  
side of the spare tire.  
2. Put the tire on the ground at the rear of  
the vehicle with the valve stem pointed  
down, and to the rear.  
3. Pull the cable and spring through the  
center of the wheel. Tilt the wheel  
retainer plate down and through the  
center wheel.  
Make sure the retainer is fully seated  
across the underside of the wheel.  
11. Spare Tire Cable (If Equipped)  
1. Spare Tire (Valve Stem Pointed Down)  
2. Tire/Wheel Retainer  
3. Hoist Cable  
4. Hoist Assembly  
5. Hoist Shaft  
6. Jack Handle Extensions  
7. Wheel Wrench  
8. Hoist Shaft Access Hole Cover  
9. Hoist Shaft Access Hole  
10. Hoist End of Extension Tool  
4. Attach the wheel wrench (7) and  
extensions (6) together, as shown.  
1. If equipped with a spare tire cable,  
reinstall the cable to the spare wheel by  
looping the cable around a wheel vent  
window then pass the clip end of the  
Vehicle Care  
397  
Caution  
Use of an air wrench or other power  
tools with the hoist mechanism is not  
recommended and could damage the  
system. Use only the tools supplied with  
the hoist mechanism.  
7. If equipped with a spare tire cable, orient  
the cable by rotating the spare tire so  
that the cable is by the frame  
9. Make sure the tire is stored securely.  
Push, pull, and then try to turn the tire.  
If the tire moves, use the wheel wrench  
to tighten the cable.  
attachment location.  
8. Raise the tire fully against the underside  
of the vehicle by turning the wheel  
wrench clockwise until you hear two  
clicks or feel it skip twice. You cannot  
overtighten the cable.  
5. Insert the hoist end (10) through the  
hole (9) in the rear bumper and onto the  
hoist shaft.  
Do not use the chiseled end of the wheel  
wrench.  
6. Raise the tire part way upward. Make  
sure the retainer is seated in the wheel  
opening.  
398  
Vehicle Care  
If equipped with a spare tire cable,  
reattach the clip to the frame  
attachment bracket. Note that there may  
be slack in the cable.  
Full-Size Spare Tire  
If this vehicle came with a full-size spare  
tire, it was fully inflated when new,  
however, it can lose air over time. Check the  
inflation pressure regularly. See Tire Pressure  
0 375 and Vehicle Load Limits 0 204 for  
information regarding proper tire inflation  
and loading the vehicle. For instructions on  
how to remove, install, or store a spare tire,  
see Tire Changing 0 389.  
Repeat this tightness check procedure  
when checking the spare tire pressure  
according to the scheduled maintenance  
information or any time the spare tire is  
handled due to service of other  
components.  
After installing the spare tire on the vehicle,  
stop as soon as possible and check that the  
spare is correctly inflated. The spare tire is  
made to perform well at speeds up to  
112 km/h (70 MPH) at the recommended  
inflation pressure, so you can finish  
your trip.  
Incorrectly Stored  
10. Close the Hoist Shaft Access Hole Cover.  
Have the damaged or flat road tire repaired  
or replaced and installed back onto the  
vehicle as soon as possible so the spare tire  
will be available in case it is needed again.  
Do not mix tires and wheels of different  
sizes, because they will not fit. Keep the  
spare tire and its wheel together.  
Correctly Stored  
Return the jack and tools to their original  
location in the vehicle. See “Removing the  
Spare Tire and Tools.”  
Vehicle Care  
Warning  
399  
pressure. Repair and replace the road tire as  
soon as it is convenient, and stow the spare  
tire for future use.  
Caution  
{
If the vehicle has four-wheel drive and a  
different size spare tire is installed, do  
not drive in four-wheel drive until the flat  
tire is repaired and/or replaced. The  
vehicle could be damaged and the repairs  
would not be covered by the warranty.  
Never use four-wheel drive when a  
different size spare tire is installed on the  
vehicle.  
Batteries can hurt you. They can be  
dangerous because:  
Jump Starting  
.
.
They contain acid that can burn you.  
They contain gas that can explode or  
ignite.  
Jump Starting - North America  
For more information about the vehicle  
battery, see Battery - North America 0 352.  
.
They contain enough electricity to  
burn you.  
If the vehicle's battery (or batteries) has run  
down, you may want to use another vehicle  
and some jumper cables to start your  
vehicle. Be sure to use the following steps  
to do it safely.  
If you do not follow these steps exactly,  
some or all of these things can hurt you.  
The vehicle may have a different size spare  
tire than the road tires originally installed  
on the vehicle. This spare tire was developed  
for use on this vehicle, so it is all right to  
drive on it. If the vehicle has four-wheel  
drive and a different size spare tire is  
Caution  
Ignoring these steps could result in costly  
damage to the vehicle that would not be  
covered by the vehicle warranty. Trying  
to start the vehicle by pushing or pulling  
it will not work, and it could damage the  
vehicle.  
Warning  
{
WARNING: Battery posts, terminals and  
related accessories can expose you to  
chemicals including lead and lead  
compounds, which are known to the  
State of California to cause cancer and  
birth defects or other reproductive harm.  
Wash hands after handling. For more  
information go to  
installed, drive only in two-wheel drive.  
If the vehicle has a spare tire that does not  
match the original road tires and wheels in  
size and type, do not include the spare in  
the tire rotation.  
Caution  
If equipped with a temporary use full-size  
spare tire, it is indicated on the tire sidewall.  
See Tire Sidewall Labeling 0 371. This spare  
tire should not be driven on over 112 km/h  
(70 mph), or 88 km/h (55 mph) when  
If the jumper cables are connected or  
removed in the wrong order, electrical  
shorting may occur and damage the  
vehicle. The repairs would not be covered  
(Continued)  
www.P65Warnings.ca.gov.  
See California Proposition 65 Warning 0 1.  
pulling a trailer, at the proper inflation  
400  
Vehicle Care  
The good battery positive (+) terminal and  
the good battery negative (–) terminal are  
on the battery of the vehicle providing the  
jump start.  
one battery, using the battery that is  
closer to the starter will reduce electrical  
resistance. This is located on the  
passenger side, in the rear of the engine  
compartment.  
Caution (Continued)  
by the vehicle warranty. Always connect  
and remove the jumper cables in the  
correct order, making sure that the cables  
do not touch each other or other metal.  
The discharged battery positive (+) terminal  
and discharged battery negative (–)  
grounding point are on the passenger side  
of the vehicle.  
3. Get the vehicles close enough so the  
jumper cables can reach, but be sure the  
vehicles are not touching each other.  
If they are, it could cause an unwanted  
ground connection. You would not be  
able to start your vehicle, and the bad  
grounding could damage the electrical  
systems.  
The discharged battery positive (+) terminal  
is under a cover. Open the cover to expose  
the terminal.  
1. Check the other vehicle. It must have a  
12-volt battery with a negative ground  
system.  
To avoid the possibility of the vehicles  
rolling, set the parking brake firmly on  
both vehicles involved in the jump start  
procedure. Put the automatic  
Caution  
If the other vehicle does not have a  
12-volt system with a negative ground,  
both vehicles can be damaged. Only use  
a vehicle that has a 12-volt system with a  
negative ground for jump starting.  
transmission in P (Park) before setting  
the parking brake. If you have a  
four-wheel-drive vehicle, be sure the  
transfer case is in a drive gear, not in  
N (Neutral).  
Connection Points and Sequence  
1. Discharged Battery Positive (+)  
Terminal  
2. Good Battery Positive (+) Terminal  
3. Good Battery Negative (−) Terminal  
4. Discharged Battery Negative (−)  
Grounding Point  
Caution  
2. If you have a vehicle with a diesel  
engine with two batteries, you should  
know before you begin that, especially in  
cold weather, you may not be able to  
get enough power from a single battery  
in another vehicle to start your diesel  
engine. If your vehicle has more than  
If any accessories are left on or plugged  
in during the jump starting procedure,  
they could be damaged. The repairs  
would not be covered by the vehicle  
(Continued)  
Vehicle Care  
401  
vehicle has one. Negative (−) will go to a  
heavy, unpainted metal engine part or to  
a remote negative (−) terminal if the  
vehicle has one.  
Caution (Continued)  
Warning  
{
warranty. Whenever possible, turn off or  
unplug all accessories on either vehicle  
when jump starting.  
Using a match near a battery can cause  
battery gas to explode. People have been  
hurt doing this, and some have been  
blinded. Use a flashlight if you need  
more light.  
Do not connect positive (+) to negative  
(−) or you will get a short that would  
damage the battery and maybe other  
parts too. And do not connect the  
negative (−) cable to the negative (−)  
terminal on the dead battery because  
this can cause sparks.  
4. Turn the ignition off on both vehicles.  
Unplug unnecessary accessories plugged  
into the accessory power outlets. Turn  
off the radio and all the lamps that are  
not needed. This will avoid sparks and  
help save both batteries. And it could  
save the radio!  
Battery fluid contains acid that can burn  
you. Do not get it on you. If you  
accidentally get it in your eyes or on  
your skin, flush the place with water and  
get medical help immediately.  
7. Connect one end of the red positive (+)  
cable to the discharged battery  
positive (+) terminal.  
5. Open the hood on the other vehicle and  
locate the positive (+) and negative (−)  
terminal locations on that vehicle.  
8. Do not let the other end touch metal.  
Connect the other end of the positive (+)  
cable to the good battery positive (+)  
terminal. Use a remote positive (+)  
terminal if the vehicle has one.  
Warning  
{
Fans or other moving engine parts can  
injure you badly. Keep your hands away  
from moving parts once the engine is  
running.  
Warning  
{
An electric fan can start up even when  
the engine is not running and can injure  
you. Keep hands, clothing, and tools  
away from any underhood electric fan.  
9. Connect one end of the black negative  
(−) cable to the good battery negative  
(−) terminal. Use a remote negative (−)  
terminal if the vehicle has one.  
6. Check that the jumper cables do not  
have loose or missing insulation. If they  
do, you could get a shock. The vehicles  
could be damaged too.  
Do not let the other end touch anything  
until the next step.  
Before you connect the cables, here are  
some basic things you should know.  
Positive (+) will go to positive (+) or to a  
remote positive (+) terminal if the  
10. Connect the other end of the negative  
(−) cable to the discharged battery  
negative (−) grounding point.  
402  
Vehicle Care  
11. Start the vehicle with the good battery  
and run the engine for a while.  
Contact a professional towing service if the  
disabled vehicle must be transported. GM  
recommends a flatbed tow truck to  
transport a disabled vehicle. Use ramps to  
help reduce approach angles, if necessary.  
Caution  
The vehicle may be equipped with an  
electric parking brake and/or an  
12. Try to start the vehicle that had the  
dead battery. If it will not start after a  
few tries, it probably needs service.  
electronic shifter. In the event of a loss of  
12-volt battery power, the electric parking  
brake cannot be released, and the vehicle  
cannot be shifted to N (Neutral). Tire  
skates or dollies must be used under the  
non-rolling tires to prevent damage while  
loading/unloading the vehicle. Dragging  
the vehicle will cause damage not  
If equipped, a tow eye may be located near  
the spare tire or emergency jack. Do not use  
the tow eye to pull the vehicle from the  
snow, mud, sand, or ditch. Tow eye threads  
may have right or left-hand threads. Use  
caution when installing or removing the  
tow eye.  
Jumper Cable Removal  
Reverse the sequence exactly when  
removing the jumper cables.  
After starting the disabled vehicle and  
removing the jumper cables, allow it to idle  
for several minutes.  
covered by the vehicle warranty.  
The vehicle must be in N (Neutral) and the  
electric parking brake must be released  
when loading the vehicle onto a flatbed tow  
truck.  
Towing the Vehicle  
Transporting a Disabled Vehicle  
Caution  
Incorrectly transporting a disabled vehicle  
may cause damage to the vehicle. Use  
proper tire straps to secure the vehicle to  
the flatbed tow truck. Do not strap or  
hook to any frame, underbody,  
Caution  
The vehicle may be equipped with a tow  
eye. Improper use of the tow eye may  
cause damage to the vehicle and is not  
covered by the vehicle warranty.  
If equipped, use the tow eye to load the  
vehicle onto a flatbed tow truck from a  
flat road surface, or to move the vehicle  
a very short distance at a walking pace.  
The tow eye is not designed for off-road  
recovery. The vehicle must be in  
Vehicles Equipped with Electronic Shifter  
The vehicle must be in N (Neutral) and the  
electric parking brake must be released  
when loading the vehicle onto a flatbed tow  
truck.  
.
If the vehicle is equipped with car wash  
mode and has 12-volt battery power, refer  
to “Car Wash Mode” under Automatic  
Transmission (Electronic Shifter) 0 223 or  
Automatic Transmission (Mechanical  
Shifter) 0 220 to place the vehicle in  
N (Neutral).  
or suspension component not specified  
below. Do not move vehicles with drive  
axle tires on the ground. Damage is not  
covered by the vehicle warranty.  
N (Neutral) with the electric parking  
brake released when using the tow eye.  
Vehicle Care  
403  
.
If the 12-volt battery is dead and/or the  
engine will not start, the vehicle will not  
move. Try to jump start the vehicle. Refer  
to Jump Starting - North America 0 399  
and if the jump start is successful, retry  
the “Car Wash Mode” procedure.  
ground. Dolly towing is towing the vehicle  
with two wheels on the ground and two  
wheels on a dolly.  
Front Attachment Points  
Here are some important things to consider  
before recreational vehicle towing:  
.
Before towing the vehicle, become  
familiar with the local laws that apply to  
recreational vehicle towing. These laws  
may vary by region.  
Vehicles Equipped with Mechanical  
Transmission Range Select Shifter  
.
The vehicle must be in N (Neutral) and  
the Electric Parking Brake must be  
released when loading the vehicle onto a  
flatbed tow truck. If the 12-volt battery is  
dead and/or Electric Parking Brake is not  
released, the vehicle will not move. Try to  
jump start the vehicle with a known good  
12-volt battery, shift the car into  
.
.
.
The towing capacity of the towing  
vehicle. Read the tow vehicle  
manufacturer's recommendations.  
How far the vehicle can be towed. Some  
vehicles have restrictions on how far and  
how long the vehicle can be towed.  
Whether the vehicle has the proper  
towing equipment. See your dealer or  
trailering professional for additional  
advice and equipment recommendations.  
The vehicle is equipped with specific  
attachment points to be used to pull the  
vehicle onto a flatbed car carrier from a flat  
road surface. Do not use these attachment  
points to pull the vehicle from snow, mud  
or sand.  
N (Neutral), and release the Electric  
Parking Brake. Refer to Jump Starting -  
North America 0 399.  
If jump starting is unsuccessful, the vehicle  
will not move. Tire skates or dollies must be  
used under the non-rolling tires to prevent  
vehicle damage.  
.
Whether the vehicle is ready to be towed.  
Just as preparing the vehicle for a long  
trip, make sure the vehicle is prepared to  
be towed.  
Recreational Vehicle Towing  
Recreational vehicle towing means towing  
the vehicle behind another vehicle, such as a  
motor home. The two most common types  
of recreational vehicle towing are dinghy  
and dolly towing. Dinghy towing is towing  
the vehicle with all four wheels on the  
Follow the tow vehicle manufacturer’s  
instructions. See your dealer or trailering  
professional for additional advice and  
equipment recommendations.  
404  
Vehicle Care  
Caution  
Only dinghy tow four-wheel-drive vehicles  
with a two-speed transfer case that have an  
N (Neutral) and a 4 n (Four-Wheel Drive  
Low) setting.  
Caution  
Use of a shield mounted in front of the  
vehicle grille could restrict airflow and  
cause damage to the transmission. The  
repairs would not be covered by the  
vehicle warranty. If using a shield, only  
use one that attaches to the towing  
vehicle.  
If a vehicle with two-wheel drive or a  
single-speed transfer case is towed with  
all four wheels on the ground, the  
drivetrain components could be damaged.  
The repairs would not be covered by the  
vehicle warranty.  
Warning  
{
Shifting a four-wheel-drive vehicle's  
transfer case into N (Neutral) can allow  
the vehicle to move even if the  
Two-wheel-drive vehicles and vehicles with a  
single-speed transfer case should not be  
towed with all four wheels on the ground.  
transmission is in P (Park). You or others  
could be injured. Set the parking brake  
and use wheel blocks before shifting the  
transfer case to N (Neutral).  
Dinghy Towing (Two-Wheel-Drive  
Vehicles and Vehicles with a  
Single-Speed Transfer Case)  
Dinghy Towing (Vehicles with a  
Two-Speed Transfer Case)  
To dinghy tow:  
1. Position the vehicle being towed behind  
the tow vehicle, facing forward and on a  
level surface.  
2. Securely attach the vehicle being towed  
to the tow vehicle.  
3. Apply the parking brake and start the  
engine.  
4. Shift the transfer case to N (Neutral). See  
“Shifting into N (Neutral)” under  
Four-Wheel Drive 0 230.  
5. With the engine running, release the  
parking brake and verify that the  
transfer case is in N (Neutral) by shifting  
Vehicle Care  
405  
the transmission to D (Drive) and then to  
R (Reverse). There should be no  
movement while shifting the  
transmission.  
10. Disconnect the negative (–) battery  
cable. See “Negative Battery Cable  
Disconnection” in Battery - North  
America 0 352.  
STOP for five seconds until the green  
light comes on the button is illuminated.  
See Ignition Positions 0 211.  
4. Set the parking brake. See Electric  
Parking Brake 0 236.  
6. Shift the transmission to P (Park).  
7. Release the parking brake.  
8. Turn the vehicle off.  
Caution  
5. Disconnect from the tow vehicle.  
6. Start the engine.  
If the steering column is locked, vehicle  
damage may occur.  
9. Turn on the ignition without starting the  
engine. To do this, take your foot off the  
brake pedal then press and hold ENGINE  
START/STOP for five seconds until the  
green light on the button is illuminated.  
See Ignition Positions 0 211.  
7. Shift the transmission to N (Neutral).  
11. Move the steering wheel to make sure  
the steering column is unlocked.  
8. Shift the transfer case to 2 m (Two-Wheel  
Drive High). When the shift to 2 m  
(Two-Wheel Drive High) is complete, the  
light in the instrument cluster will stop  
flashing and stay lit. See  
12. For column shift transmissions, verify the  
transmission is in P (Park). Failing to put  
the transmission into Park before flat  
towing can damage the transmission.  
Four-Wheel-Drive Light 0 120.  
Warning  
{
13. Keep the remote key outside of the  
vehicle and manually lock the doors.  
Access the vehicle by using the key in  
the door lock. See Door Locks 0 19.  
9. Check that the vehicle is in 2 m  
(Two-Wheel Drive High) by starting the  
engine and shifting the transmission to  
D (Drive) and then to R (Reverse). There  
should be movement of the vehicle while  
shifting.  
To avoid death, serious injury,  
or property damage, before dinghy  
towing the vehicle, always disconnect and  
secure the negative battery cable and  
cover the negative battery post and cable  
with a non-conductive material. If the  
battery is left connected or the battery  
cable contacts the post, the Electric  
Parking Brake may activate during  
towing, which could cause a crash.  
Disconnecting the Towed Vehicle  
Before disconnecting from the tow vehicle:  
10. Shift the transmission to P (Park) and  
turn off the ignition.  
1. Park on a level surface. Secure the  
vehicle with wheel blocks.  
11. Release the parking brake and remove  
the wheel blocks.  
2. Re-connect the negative (–) battery. See  
Battery - North America 0 352.  
12. Reset any lost presets.  
3. Turn on the ignition without starting the  
engine. With your foot off the brake  
pedal, press and hold ENGINE START/  
406  
Vehicle Care  
The outside temperature display will  
default to 0 °C (32 °F) but will reset with  
normal usage.  
Appearance Care  
Exterior Care  
Dolly Towing  
Locks  
Locks are lubricated at the factory. Use a  
de-icing agent only when absolutely  
necessary, and have the locks greased after  
using. See Recommended Fluids and  
Lubricants 0 421.  
Washing the Vehicle  
To preserve the vehicle's finish, wash it  
often and out of direct sunlight.  
Caution  
Do not tow this vehicle with two wheels  
on the ground, or vehicle damage could  
occur. This damage would not be covered  
by the vehicle warranty.  
Warning  
{
Do not power wash any part of the  
vehicle’s interior, including the vinyl floor  
covering. This could damage safety and  
other systems in the vehicle, which  
would not be covered by the vehicle  
warranty.  
Dolly towing this vehicle is not allowed with  
either the front or the rear tires on the  
ground for two-wheel drive or four-wheel  
drive, regardless of transfer case.  
Vehicle Care  
407  
Caution  
Caution (Continued)  
Caution (Continued)  
Do not use petroleum-based, acidic,  
or abrasive cleaning agents as they can  
damage the vehicle's paint, metal,  
or plastic parts. If damage occurs, it  
would not be covered by the vehicle  
warranty. Approved cleaning products can  
be obtained from your dealer. Follow all  
manufacturer directions regarding correct  
product usage, necessary safety  
This could cause damage that would not  
be covered by the vehicle warranty.  
not recommended, due to lack of  
clearance for the undercarriage and/or  
wide rear tires and wheels.  
Solvents or aggressive cleaners may harm  
underhood components. The usages of these  
chemicals should be avoided.  
Caution  
Automatic car washes can cause damage  
to the vehicle, wheels, ground effects,  
and convertible top (if equipped).  
Recommend water only.  
A pressure washer may be used, but care  
must be utilized. The following criteria must  
be followed:  
Water pressure must be kept below  
14 000 KPa (2,000 PSI).  
Water temperature must be below 80 °C  
(180 °F).  
Spray nozzle with a 40 degree wide angle  
spray pattern or wider must be used.  
precautions, and appropriate disposal of  
any vehicle care product.  
Do not use automatic car washes due to  
lack of clearance for the undercarriage,  
wide rear tires, and wheels.  
.
.
.
.
Caution  
If using an automatic car wash, follow with  
the car wash instructions. The windshield  
wiper and rear window wiper, if equipped,  
must be turned off. Remove any accessories  
that may be damaged or interfere with the  
car wash equipment.  
Avoid using high-pressure washes closer  
than 30 cm (12 in) to the surface of the  
vehicle. Use of power washers exceeding  
8 274 kPa (1,200 psi) can result in  
Nozzle must be kept at least 30 cm (1 ft)  
away from all surfaces.  
damage or removal of paint and decals.  
Automatic Car Wash  
See Power Assist Steps 0 28 for cleaning  
information.  
Cleaning Underhood Components  
Caution  
Caution  
Rinse the vehicle well, before washing and  
after, to remove all cleaning agents  
completely. If they are allowed to dry on  
the surface, they could stain.  
Some automatic car washes can cause  
damage to the vehicle, wheels and  
ground effects. Automatic car washes are  
(Continued)  
Do not power wash any component  
under the hood that has this e  
symbol.  
(Continued)  
408  
Vehicle Care  
.
.
Use only approved cleaning solutions for  
aluminum, chrome or stainless steel.  
Some cleaners are highly acidic or contain  
alkaline substances and can damage the  
moldings.  
Always dilute a concentrated cleaner  
according to the manufacturer’s  
instructions.  
Do not use cleaners that are not intended  
for automotive use.  
Use a nonabrasive wax on the vehicle  
after washing to protect and extend the  
molding finish.  
Dry the finish with a soft, clean chamois or  
an all-cotton towel to avoid surface  
scratches and water spotting.  
Caution  
Machine compounding or aggressive  
polishing on a basecoat/clearcoat paint  
finish may damage it. Use only  
non-abrasive waxes and polishes that are  
made for a basecoat/clearcoat paint finish  
on the vehicle.  
Finish Care  
Application of aftermarket clearcoat sealant/  
wax materials is not recommended.  
If painted surfaces are damaged, see your  
dealer to have the damage assessed and  
repaired. Foreign materials such as calcium  
chloride and other salts, ice melting agents,  
road oil and tar, tree sap, bird droppings,  
chemicals from industrial chimneys, etc., can  
damage the vehicle's finish if they remain  
on painted surfaces. Wash the vehicle as  
soon as possible. If necessary, use  
.
.
To keep the paint finish looking new, keep  
the vehicle garaged or covered whenever  
possible.  
Protecting Exterior Bright Metal Moldings  
Spray-In Bedliner Care  
Caution  
A spray-in bedliner is a permanent coating  
that bonds to the truck bed and cannot be  
removed. Promptly rinse the bedliner surface  
following a chemical spill to avoid  
permanent damage.  
Failure to clean and protect the bright  
metal moldings can result in a hazy  
white finish or pitting. This damage  
would not be covered by the vehicle  
warranty.  
non-abrasive cleaners that are marked safe  
for painted surfaces to remove foreign  
matter.  
Occasional hand waxing or mild polishing  
should be done to remove residue from the  
paint finish. See your dealer for approved  
cleaning products.  
Spray-in bedliners can fade from oxidation,  
road dirt, heavy-duty hauling, and hard  
water stains. Clean it periodically by  
washing off the loose dirt and using a mild  
detergent. To restore the original  
appearance, apply the bedliner conditioner  
available through your dealer.  
The bright metal moldings on the vehicle  
are aluminum, chrome or stainless steel. To  
prevent damage always follow these  
cleaning instructions:  
Be sure the molding is cool to the touch  
before applying any cleaning solution.  
Do not apply waxes or polishes to uncoated  
plastic, vinyl, rubber, decals, simulated  
wood, or flat paint as damage can occur.  
.
Vehicle Care  
409  
.
.
Ice scrapers or other hard items.  
Shutter System  
Caution  
Aftermarket appearance caps or covers  
while the lamps are illuminated, due to  
excessive heat generated.  
Using silicone-based products may  
damage the bedliner, reduce the  
slip-resistant texture, and attract dirt.  
Caution  
Cleaning Exterior Lamps/Lenses,  
Emblems, Decals and Stripes  
Failure to clean lamps properly can cause  
damage to the lamp cover that would  
not be covered by the vehicle warranty.  
Use only lukewarm or cold water, a soft  
cloth, and a car washing soap to clean  
exterior lamps, lenses, emblems, decals and  
stripes. Follow instructions under "Washing  
the Vehicle" previously in this section.  
Caution  
Using wax on low gloss black finish  
stripes can increase the gloss level and  
create a non-uniform finish. Clean low  
gloss stripes with soap and water only.  
Lamp covers are made of plastic, and some  
have a UV protective coating. Do not clean  
or wipe them while they are dry.  
The vehicle may have a shutter system  
designed to help improve fuel economy.  
Keep the shutter system clear of debris,  
snow and ice. If the check engine light is  
activated, please check to see if the shutter  
system is clear of debris, snow or ice.  
Do not use any of the following on lamp  
covers:  
Air Intakes  
Clear debris from the air intakes, between  
the hood and windshield, when washing the  
vehicle.  
.
Abrasive or caustic agents.  
.
Washer fluids and other cleaning agents  
in higher concentrations than suggested  
by the manufacturer.  
Windshield and Wiper Blades  
Clean the outside of the windshield with  
glass cleaner.  
.
Solvents, alcohols, fuels, or other harsh  
cleaners.  
Clean rubber blades using a lint-free cloth or  
paper towel soaked with windshield washer  
fluid or a mild detergent. Wash the  
windshield thoroughly when cleaning the  
410  
Vehicle Care  
blades. Bugs, road grime, sap, and a buildup  
of vehicle wash/wax treatments may cause  
wiper streaking.  
Caution (Continued)  
Caution (Continued)  
tire dressing, always wipe off any  
overspray from all painted surfaces on  
the vehicle.  
or brushes. Use only GM approved  
cleaners. Do not drive the vehicle through  
an automatic car wash that uses silicon  
carbide tire/wheel cleaning brushes.  
Damage could occur and the repairs  
would not be covered by the vehicle  
warranty.  
Replace the wiper blades if they are worn or  
damaged. Damage can be caused by  
extreme dusty conditions, sand, salt, heat,  
sun, snow, and ice.  
Wheels and Wheel Trim  
Use a soft, clean cloth with mild soap and  
water to clean the wheels. After rinsing  
thoroughly with clean water, dry with a  
soft, clean towel. A wax may then be  
applied.  
Weatherstrips  
Apply weatherstrip lubricant on  
Brake System  
weatherstrips to make them last longer, seal  
better, and not stick or squeak. Lubricate  
weatherstrips once a year. Hot, dry climates  
may require more frequent application. Black  
marks from rubber material on painted  
surfaces can be removed by rubbing with a  
clean cloth. See Recommended Fluids and  
Lubricants 0 421.  
Visually inspect brake lines and hoses for  
proper hook-up, binding, leaks, cracks,  
chafing, etc. Inspect disc brake pads for wear  
and rotors for surface condition. Inspect  
drum brake linings/shoes for wear or cracks.  
Inspect all other brake parts.  
Caution  
Chrome wheels and chrome wheel trim  
may be damaged if the vehicle is not  
washed after driving on roads that have  
been sprayed with magnesium chloride or  
calcium chloride. These are used on roads  
for conditions such as dust control.  
Always wash the chrome with soap and  
water after exposure.  
Steering, Suspension, and Chassis  
Components  
Tires  
Use a stiff brush with tire cleaner to clean  
the tires.  
Visually inspect steering, suspension, and  
chassis components for damaged, loose,  
or missing parts or signs of wear at least  
once a year.  
Caution  
Using petroleum-based tire dressing  
products on the vehicle may damage the  
paint finish and/or tires. When applying a  
(Continued)  
Caution  
Inspect power steering for proper  
attachment, connections, binding, cracks,  
chafing, etc.  
To avoid surface damage on wheels and  
wheel trim, do not use strong soaps,  
chemicals, abrasive polishes, cleaners,  
(Continued)  
Vehicle Care  
411  
Visually check constant velocity joint boots  
and axle seals for leaks.  
and contaminate the fluid. Contaminated  
fluid will decrease the life of the transfer  
case and/or axles and should be replaced.  
Interior Care  
To prevent dirt particle abrasions, regularly  
clean the vehicle's interior. Before using  
cleaners, read and follow all safety  
instructions on the label. While cleaning the  
interior, open the doors and windows to get  
proper ventilation. Newspapers or dark  
garments can transfer color to the vehicle’s  
interior.  
Caution  
Sheet Metal Damage  
Lubrication of applicable suspension  
points should not be done unless the  
temperature is −12 °C (10 °F) or higher,  
or damage could result.  
If the vehicle is damaged and requires sheet  
metal repair or replacement, make sure the  
body repair shop applies anti-corrosion  
material to parts repaired or replaced to  
restore corrosion protection.  
Body Component Lubrication  
Original manufacturer replacement parts will  
provide the corrosion protection while  
maintaining the vehicle warranty.  
Caution  
Lubricate all key lock cylinders, hood hinges,  
liftgate hinges, and the steel fuel door hinge  
unless the components are plastic. Applying  
silicone grease on weatherstrips with a clean  
cloth will make them last longer, seal better,  
and not stick or squeak.  
Immediately remove cleaners, hand  
lotions, sunscreen, and insect repellent  
from all interior surfaces or permanent  
damage may result.  
Finish Damage  
Quickly repair minor chips and scratches  
with touch-up materials available from your  
dealer to avoid corrosion. Larger areas of  
finish damage can be corrected in your  
dealer's body and paint shop.  
Underbody Maintenance  
Caution  
At least twice a year, spring and fall, use  
plain water to flush any corrosive materials  
from the underbody. Take care to  
thoroughly clean any areas where mud and  
other debris can collect. If equipped with  
power assist steps, extend them and then  
use a high pressure wash to clean all joints  
and gaps.  
Use cleaners specifically designed for the  
surfaces being cleaned to prevent  
permanent damage to the vehicle. Apply  
all cleaners directly to a cleaning cloth.  
Do not spray cleaners on any switches or  
controls.  
Chemical Paint Spotting  
Airborne pollutants can fall upon and attack  
painted vehicle surfaces causing blotchy,  
ring-shaped discolorations, and small,  
irregular dark spots etched into the paint  
surface. Refer to “Finish Care” previously in  
this section.  
When using liquid soap cleaners, follow the  
directions on the specific cleaner or soap  
solution for dilution instructions.  
Do not directly power wash the transfer  
case and/or front/rear axle output seals.  
High pressure water can overcome the seals  
412  
Vehicle Care  
Caution  
Coated Moldings  
Caution (Continued)  
Coated moldings should be cleaned.  
.
Do not use scented or gel-type hand  
sanitizers. If hand sanitizer comes in  
contact with interior surfaces of the  
vehicle, blot immediately and clean  
with a soft cloth dampened with a  
mild soap and water solution.  
To prevent damage:  
.
When lightly soiled, wipe with a sponge  
.
Never use a razor or any other sharp  
object to remove soil from any interior  
surface  
or soft, lint-free cloth dampened with  
water.  
.
When heavily soiled, use warm soapy  
water.  
.
.
Never use a brush with stiff bristles.  
Never rub any surface aggressively or  
with too much pressure.  
Vinyl/Rubber  
Interior Glass  
If equipped with vinyl floor and rubber floor  
mats, use a soft cloth and/or brush  
dampened with water to remove dust and  
loose dirt. For more thorough cleaning, use  
a mild soap and water solution.  
.
.
To clean, use a microfiber cloth fabric  
dampened with water. Wipe droplets left  
behind with a clean dry cloth. If necessary,  
use a commercial glass cleaner after  
cleaning with plain water.  
Do not get any exposed electrical  
components wet.  
Do not use laundry detergents or  
dishwashing soaps with degreasers. Do  
not use solutions that contain strong  
or caustic soap.  
Caution  
Warning  
{
.
.
.
Do not heavily saturate the upholstery  
when cleaning.  
To prevent scratching, never use abrasive  
cleaners on automotive glass. Abrasive  
cleaners or aggressive cleaning may  
damage the rear window defogger.  
Do not use cleaners that contain silicone,  
wax-based products, or cleaners that  
increase gloss on vinyl/rubber floor and  
mats. These cleaners can permanently  
change the appearance and feel of the  
vinyl/rubber and can make the floor  
slippery. Your foot could slip while  
operating the vehicle, and you could lose  
control, resulting in a crash. You or  
others could be injured.  
Do not use solvents or cleaners  
containing solvents.  
Do not use disinfecting wipes that are  
scented or contain bleach. Do not use  
wipes or cleaners that show a color  
transfer to the wipe or change the  
appearance of the interior surface  
when used.  
Cleaning the windshield with water during  
the first three to six months of ownership  
will reduce tendency to fog.  
Speaker Covers  
Vacuum around a speaker cover gently, so  
that the speaker will not be damaged. Clean  
spots with water and mild soap.  
(Continued)  
Vehicle Care  
Caution  
Do not attach a device with a suction cup  
to the display. This may cause damage  
and would not be covered by the vehicle  
warranty.  
413  
5. If the soil is not completely removed,  
use a mild soap solution followed only  
by plain water.  
Fabric/Carpet/Suede  
Start by vacuuming the surface using a soft  
brush attachment. If a rotating vacuum  
brush attachment is being used, only use it  
on the floor carpet. Before cleaning, gently  
remove as much of the soil as possible:  
If the soil is not completely removed, it may  
be necessary to use a commercial upholstery  
cleaner or spot lifter. Test a small hidden  
area for colorfastness before using a  
commercial upholstery cleaner or spot lifter.  
If ring formation occurs, clean the entire  
fabric or carpet.  
.
Gently blot liquids with a paper towel.  
Continue blotting until no more soil can  
be removed.  
Instrument Panel, Leather, Vinyl, Other  
Plastic Surfaces, Low Gloss Paint  
Surfaces, and Natural Open Pore Wood  
Surfaces  
.
For solid soils, remove as much as  
possible prior to vacuuming.  
After cleaning, use a paper towel to blot  
excess moisture.  
Use a soft bristle brush to remove dust from  
knobs and crevices on the instrument  
cluster. Use a soft microfiber cloth  
dampened with water to remove dust and  
loose dirt. For a more thorough cleaning,  
use a soft microfiber cloth dampened with a  
mild soap and water solution.  
To clean:  
Cleaning High Gloss Surfaces and Vehicle  
Information and Radio Displays  
1. Saturate a clean, lint-free colorfast cloth  
with water. Microfiber cloth is  
recommended to prevent lint transfer to  
the fabric or carpet.  
Use a microfiber cloth on high gloss surfaces  
or vehicle displays. First, use a soft bristle  
brush to remove dirt that can scratch the  
surface. Then gently clean by rubbing with a  
microfiber cloth. Never use window cleaners  
or solvents. Periodically hand wash the  
microfiber cloth separately, using mild soap.  
Do not use bleach or fabric softener. Rinse  
thoroughly and air dry before next use.  
2. Remove excess moisture by gently  
wringing until water does not drip from  
the cleaning cloth.  
Caution  
Soaking or saturating leather, especially  
perforated leather, as well as other  
interior surfaces, may cause permanent  
damage. Wipe excess moisture from  
these surfaces after cleaning and allow  
them to dry naturally. Never use heat,  
steam, or spot removers. Do not use  
liquids that contain alcohol or solvents on  
(Continued)  
3. Start on the outside edge of the soil and  
gently rub toward the center. Fold the  
cleaning cloth to a clean area frequently  
to prevent forcing the soil into the  
fabric.  
4. Continue gently rubbing the soiled area  
until there is no longer any color  
transfer from the soil to the cleaning  
cloth.  
414  
Vehicle Care  
recommended that GM-certified floor  
mats are purchased. Non-GM floor mats  
may not fit properly and may interfere  
with the pedals. Always check that the  
floor mats do not interfere with the  
pedals.  
Do not use a floor mat/liner if the vehicle  
is not equipped with a floor mat retainer  
on the driver side floor.  
Use the floor mat/liner insert with the  
correct side up. Do not turn it over.  
Do not place anything on top of the  
driver side floor mat/liner.  
Caution (Continued)  
Warning  
{
leather seats. Do not use cleaners that  
contain silicone or wax-based products.  
Cleaners containing these solvents can  
permanently change the appearance and  
feel of leather or soft trim, and are not  
recommended.  
Do not bleach or dye seat belt webbing.  
It may severely weaken the webbing. In  
a crash, they might not be able to  
provide adequate protection. Clean and  
rinse seat belt webbing only with mild  
soap and lukewarm water. Allow the  
webbing to dry.  
.
Do not use cleaners that increase gloss,  
especially on the instrument panel. Reflected  
glare can decrease visibility through the  
windshield under certain conditions.  
.
.
.
.
Floor Mats  
Warning  
{
Use only a single floor mat/liner on the  
driver side.  
Do not place one floor mat/liner on top  
of another.  
Caution  
Use of air fresheners may cause  
If a floor mat, a liner, or a liner insert is  
the wrong size or is not properly  
permanent damage to plastics and  
painted surfaces. If an air freshener  
comes in contact with any plastic or  
painted surface in the vehicle, blot  
immediately and clean with a soft cloth  
dampened with a mild soap solution.  
Damage caused by air fresheners would  
not be covered by the vehicle warranty.  
installed, it can interfere with the pedals.  
Interference with the pedals can cause  
unintended acceleration and/or increased  
stopping distance, which can cause a  
crash and injury. Make sure the floor  
mat, liner, or liner insert does not  
interfere with the pedals.  
Removing and Replacing the Floor Mats/  
Liners  
Pull up on the rear of the driver side floor  
mat/liner to unlock each retainer and  
remove.  
Use the following guidelines for proper floor  
mat/liner use:  
Care of Seat Belts  
.
The original equipment floor mats are  
designed for your vehicle. If the floor  
mats need to be replaced, it is  
Keep belts clean and dry.  
Vehicle Care  
415  
Reinstall by lining up the floor mat/liner  
retainer openings over the carpet retainers  
and snapping into position.  
Reinstall by lining up the floor liner insert  
button clips over the liner retainers and  
snapping into position.  
Make sure the floor mat/liner is properly  
secured in place.  
Make sure the floor liner insert is properly  
secure in place using all button clips.  
Verify the floor mat/liner does not interfere  
with the pedals.  
Verify the floor liner insert does not  
interfere with the pedals.  
Removing and Replacing the Floor Liner  
Inserts  
Cleaning Rubber Floor Mats (All-Weather  
Mats and Floor Liners)  
Pull up on the edge of the driver side floor  
liner insert to unlock each button clip and  
remove.  
See “Vinyl/Rubber” under Interior Care 0 411  
for important cleaning information.  

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