Get Vehicle Care -> Wheels and Tires Guide for Chevrolet Silverado 1500 Light Truck 2023

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

{

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

Vehicle Care -> Wheels and Tires for Your Chevrolet Silverado 1500 Light Truck 2023

Popular Manuals