Vehicle Care -> Electrical System for Your Chevrolet Silverado 1500 Light Truck 2023

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 GMs 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  
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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  
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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 12 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  
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