Fuse Box Diagrams GMC Sierra 1500 (GMT T1XX; 2019-2022)
Page Contents:
In this article, you will find information about the fuses of the GMC Sierra 1500 (GMT T1XX; models 2019, 2020, 2021, and 2022), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in GMC Sierra / Sierra Denali 1500
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. To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. If there is a problem on the road and a fuse needs to be replaced, there are some spare fuses and a fuse puller in the left instrument panel fuse block.
Caution!
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.
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
Location of Fuse Boxes
Engine Compartment Fuse Block: The engine compartment fuse block is in the engine compartment, on the passenger side of the vehicle. Lift the cover to access the fuse block.
Instrument Panel Fuse Block (Right): 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:
Push the tab at the top of fuse block down.
Pull the top of the fuse block outward.
Reverse Steps 1–2 to reinstall.
Instrument Panel Fuse Block (Left): The left instrument panel fuse block access door is on the driver side edge of the instrument panel. Pull off the cover to access the fuse block.
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.
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart.
Fuse Box Diagrams
2019
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2019)
№
Usage
1
High-beam left
2
High-beam right
3
Headlamp left
4
Headlamp right
6
TIM
7
-
8
Fog lamp
9
VKM
10
-
11
Police upfitter
12
-
13
Washer front
14
Washer rear
15
MSB driver
16
-
17
IECL 1
19
DC/AC inverter
20
IECR 2
21
MSB pass
22
IECL 2
24
Electric brake booster 1
25
REC
26
-
27
Horn
28
-
29
-
30
-
31
-
32
Rear window defogger
33
Heated mirror
34
Parking lamp left
37
Euro trailer
38
TIM
39
-
40
Misc ignition
41
Trailer parking lamp
42
Park lamp right
44
-
45
Second fuel pump
46
Engine control module ignition
47
Transmission control module ignition
48
-
49
Transmission control module
50
A/C clutch
51
Transfer case control module
52
Front wiper
53
Center high-mounted stop lamp
54
Trailer reverse lamp
55
Trailer back-up lamp
56
SADS
57
TTPM
58
Starter motor
60
Active fuel management 1
61
VES
62
Integrated chassis control module / CVS
63
Trailer battery
65
Auxiliary underhood electrical center
66
Cooling fan motor left
67
Active fuel management 2
68
-
69
Starter pinion
71
Cooling fan
72
Cooling fan right
73
Trailer stop/turn lamp left
74
TIM
75
DEFC
76
Electric RNG BDS
78
Engine control module
79
Auxiliary battery
80
Cabin cooling pump
81
Trailer stop/turn lamp right
82
TIM
83
FTZM
84
Trailer brake
85
ENG
86
Engine control module
87
Injector B even
88
O2 B sensor
89
O2 A sensor
90
Injector A odd
91
Engine control module throttle control
92
Cool fan clutch
Relays
5
Headlamp
18
DC/AC inverter
23
Rear window defogger
35
Parking lamp
36
Run/Crank
43
Second fuel pump
59
A/C clutch
64
Starter motor
70
Starter pinion
77
Powertrain
Instrument Panel Fuse Block (Right)
List of fuses in the Instrument Panel Fuse Block (Right) (2019)
№
Usage
F1
Right doors
F2
Left doors
F3
Universal remote system
F4
-
F5
-
F6
Front blower
F8
Lumbar switch
F10
Body control module 6 / Body control module 7
F11
Seat/CLM
F12
Body control module 3 / Body control module 5
F14
Mirrors / Windows module
F17
Steering wheel controls
F18
VPM / OBS DET
F19
DLIS
F20
Cooled seats
F21
NOT R/C
F22
Heated steering wheel
F23
MISC R/C
F24
Instrument panel cluster ignition / Overhead
F25
Heating, ventilation, and air conditioning ignition / Heating, ventilation, and air conditioning auxiliary
F26
USB ports / Special equipment option retained accessory power
F27
Accessory power outlet / retained accessory power
F28
Accessory power outlet / Battery
F30
Sensing and diagnostic module / Parking brake
F31
Body control module 4
F32
Special equipment option / Data link connection
F33
Body control module 8
F34
Cargo lamp
F40
CGM
F41
Infotainment 1
F42
TCP
F43
-
F44
AVM
F45
Body control module 2
F46
Heating, ventilation, and air conditioning / Battery 1
F47
Instrument panel cluster / Battery
F48
Transmission control module
F49
Body control module 1
F50
-
F51
Battery 1
F52
Battery 2
F53
-
F54
Sunroof
F55
Driver power seat
F56
DC DC TRANS 1
F57
DC DC TRANS 2
F58
Infotainment 2
Circuit Breakers
1
Accessory power outlet 2
2
Accessory power outlet 1 / Cigarette Lighter
3
Accessory power outlet 3
4
Accessory power outlet 4
Relays
K1
Run/Crank
K2
Retained accessory power / Accessory 1
K4
Retained accessory power / Accessory 2
K5
-
Instrument Panel Fuse Block (Left)
List of fuses in the Instrument Panel Fuse Block (Left) (2019)