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EnglishVehicle Care -> Electrical System for your Chevrolet Silverado 1500 2018-2025
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.
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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
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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
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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)
