Fuse Box Diagrams GMC Sierra HD (GMT T1XX; 2022-2023)

In this article, you will find information about the fuses of the GMC Sierra 2500/3500HD (GMT T1XX; models 2022 and 2023) including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

GMC Sierra (GMT T1XX; 2022-2023)

Checking and Replacing Fuses in GMC Sierra 2500/3500HD

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.

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 driver side of vehicle. Lift the cover to access the fuse block.
GMC Sierra (GMT T1XX; 2022-2023): Engine compartment fuse box location

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. A fuse puller is available on the left instrument panel end cap.
GMC Sierra (GMT T1XX; 2022-2023): Instrument panel fuse box location

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.
GMC Sierra (GMT T1XX; 2022-2023): Instrument panel fuse box location

  1. To access the back of the fuse block:
  2. Push the tab at the top of fuse block down.
  3. Pull the top of the fuse block outward.
  4. Reverse Steps 1–2 to reinstall.

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

2022

Engine Compartment Fuse Block

GMC Sierra (GMT T1XX; 2022): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2022)
№Usage
1High-beam left
2High-beam right
3Headlamp left
4 Headlamp right
6-
7-
8Fog lamp
9-
10-
11Police upfitter
12-
13Washer front
14Washer rear
15-
16-
17IECL1
19DC/AC inverter
20IECR 2 (LD) / EBCM2 (HD)
21-
22IECL2
24EBCM 1
25-
26-
48-
49Transmission control module
50A/C clutch
51Transfer case control module
52Front wiper
53Center high-mounted stop lamp
54Trailer reverse lamp
55Trailer back-up lamp
56SADS
57TTPM / SBZA
58Starter motor (LD & HD DSL)
60Active fuel management 1
61VES
62Integrated chassis control module / CVS
63Trailer battery
65Auxiliary underhood electrical center
66Cooling fan motor left
67Active fuel management 2
68-
69Starter Pinion (LD) / Starter Motor (HD Gas)
71Cooling fan
72Cooling fan right/lower
73Trailer stop/turn lamp left
74Trailer Interface Module 1
75DEFC
76Electric RNG BDS
78Engine control module
79Auxiliary battery
80Cabin cooling pump
81Trailer stop/turn lamp right
82Trailer Interface Module 2
83FTZM
84Trailer brake
85ENG
86Engine control module
87Injector B even
88O2 B sensor
89O2 A sensor
90Injector A odd
91Engine control module throttle control
92Cool fan dutch / Aeroshutter
Relays
5Headlamp
18DC/AC inverter
23Rear window defogger
35Parking lamp
36Run/Crank
43-
59A/C clutch
64Starter Motor (LD & HD DSL)
70Starter Pinion (LD) / Starter Motor (HD Gas)
77Powertrain
Instrument Panel Fuse Block (Left)

GMC Sierra (GMT T1XX; 2022): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (Left) (2022)
№Usage
F1Rear Heated Seats Left/Right
F3-
F4-
F5Spare / MFEG - Multifunction End Gate
F6Heated and Ventilated Seats Left/Right
F8-
F9Passive Entry Passive Start / Spare
F10-
F11-
F12Passenger Power Seat
F13Export Power Take Off / Special Equipment Option 1
F14-
F15-
F16AMP - Amplifier
F17-
F18-
F20Endgate
F22Rear Sliding Window
F23-
F24-
F25-
F26-
F27-
Circuit Breakers
CB1-
Relays
K1Rear Sliding Window Open
K2Rear sliding Window Close
K3MFEG Major 1 - Multifunction End Gate Major 1
K4MFEG Minor 1 - Multifunction End Gate Minor 1
K5MFEG Minor 2 - Multifunction End Gate Minor 2
K6MFEG Major 2 - Multifunction End Gate Major 2
K7-
K8-
Instrument Panel Fuse Block (Right)

GMC Sierra (GMT T1XX; 2022): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (Right) (2022)
№Usage
F1Right Doors
F2Left Doors
F3Universal Garage Door Opener
F4-
F5-
F6Front Blower
F8Lumbar Switch
F10Body Control Module 6 / Body Control Module 7
F11Seat / Column Lock Module
F12Body Control Module 3 / Body Control Module 5
F14Mirrors / Windows Module
F17Steering Wheel Controls
F18Video Processing Module / Obstacle Detection
F19DLIS - Discrete Logic Ignition Switch
F20Ventilated Seats
F21NOT R/C
F22Heated Steering Wheel
F23MISC R/C
F24Power Take Off / Reflective Light Auxiliary Display / Instrument Panel Cluster / Central Gateway Module / Inside Rear View Mirror / Overhead Console Module Ignition
F25Heating, Ventilation, and Air Conditioning Ignition / Heating, Ventilation, and Air Conditioning Auxiliary
F26USB Ports / Special Equipment Option Retained Accessory Power
F27Accessory Power Outlet / Retained Accessory Power
F28Accessory Power Outlet / Battery
F30Sensing and Diagnostic Module/Parking Brake
F31Body Control Module 4
F32Special Equipment Option / Data Link Connection
F33Body Control Module 8
F34Cargo Lamp
F40CGM - Central Gateway Module
F41Infotainment 1
F42TCP - Telematics Connectivity Platform
F43-
F44-
F45Body Control Module 2
F46Heating, Ventilation, and Air Conditioning / Battery 1
F47Instrument Panel Cluster / Battery
F48Transmission Control Module
F49Body Control Module 1
F50-
F51Battery 1
F52Battery 2
F53-
F54Sunroof
F55Driver Power Seat
F56DC DC TRANS 1
F57DC DC TRANS 2
F58Infotainment 2
Circuit Breakers
1Accessory Power Outlet 2
2Accessory Power Outlet 1 / Cigarette Lighter
3-
4-
Relays
K1Run/Crank
K2Retained Accessory Power / Accessory 1
K4-
K5-

2023

Engine Compartment Fuse Block

GMC Sierra (GMT T1XX; 2023): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2023)
№Usage
1 High-beam left
2 High-beam right
3Headlamp left
4 Headlamp right
6-
7-
8Fog lamp
9-
10-
11Police upfitter
12-
13Washer front
14Washer rear
15-
16-
17IECL1
19DC/AC inverter
20IECR 2 (LD) / EBCM 2 (HD)
21-
22IECL 2
24EBCM 1
25-
26-
27Horn
28-
29-
30-
31-
32Rear window defogger
33Heated mirror
34Parking lamp left
37-
38-
39-
40Misc ignition
41Trailer parking lamp
42Park lamp right
44-
45-
46Engine control module ignition
47Transmission control module ignition
48-
49Transmission control module
50A/C clutch
51Transfer case control module
52Front wiper
53Center high-mounted stop lamp
54Trailer reverse lamp
55Trailer back-up lamp
56SADS
57TTPM / SBZA
58Starter motor (LD & HD DSL)
60Active fuel management 1
61VES
62Integrated chassis control module / CVS
63Trailer battery
65Auxiliary underhood electrical center
66Cooling fan motor left
67Active fuel management 2
68-
69Starter Pinion (LD) / Starter Motor (HD Gas)
71Cooling fan
72Cooling fan right / lower
73Trailer stop/turn lamp left
74Trailer Interface Module 1
75DEFC
76Electric RNG BDS
78Engine control module
79Auxiliary battery
80Cabin cooling pump
81Trailer stop/turn lamp right
82Trailer Interface Module 2
83FTZM
84Trailer brake
85ENG
86Engine control module
87Injector B even
88O2 B sensor
89O2 A sensor
90Injector A odd
91Engine control module throttle control
92Cool fan dutch / Aeroshutter
Relays
5Headlamp
18DC/AC inverter
23Rear window defogger
35Parking lamp
36Run/Crank
43-
59A/C clutch
64Starter Motor (LD & HD DSL)
70Starter Pinion (LD) / Starter Motor (HD Gas)
77Powertrain
Instrument Panel Fuse Block (Left)

GMC Sierra (GMT T1XX; 2023): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (Left) (2023)
№Usage
F1Rear Heated Seats Left/Right
F3-
F4-
F5Spare / MFEG - Multifunction End Gate
F6Heated and Ventilated Seats Left/Right
F8-
F9Passive Entry Passive Start/ Spare
F10-
F11-
F12Passenger Power Seat
F13Export Power Take Off / Special Equipment Option 1
F14-
F15-
F16AMP - Amplifier
F17-
F18-
F20Endgate
F22Rear Sliding Window
F23-
F24-
F25-
F26-
F27-
Circuit Breakers
CB1
Relays
K1Rear Sliding Window Open
K2Rear sliding Window Close
K3MFEG Major 1 - Multifunction End Gate Major 1
K4MFEG Minor 1 - Multifunction End Gate Minor 1
K5MFEG Minor 2 - Multifunction End Gate Minor 2
K6MFEG Major 2 - Multifunction End Gate Major 2
K7-
K8-
Instrument Panel Fuse Block (Right)

GMC Sierra (GMT T1XX; 2023): Instrument panel fuse box diagram

№Usage
F1Right Doors
F2Left Doors
F3Universal Garage Door Opener
F4-
F5-
F6Front Blower
F8Lumbar Switch
F10Body Control Module 6 / Body Control Module 7
F11Seat / Column Lock Module
F12Body Control Module 3 / Body Control Module 5
F14Mirrors / Windows Module
F17Steering Wheel Controls
F18Video Processing Module / Obstacle Detection
F19DLIS - Discrete Logic Ignition Switch
F20Ventilated Seats
F21NOT R/C
F22Heated Steering Wheel
F23MISC R/C
F24Power Take Off / Reflective Light Auxiliary Display / Instrument Panel Cluster / Central Gateway Module / Inside Rear View Mirror / Overhead Console Module Ignition
F25Heating, Ventilation, and Air Conditioning Ignition / Heating, Ventilation, and Air Conditioning Auxiliary
F26USB Ports / Special Equipment Option Retained Accessory Power
F27Accessory Power Outlet / Retained Accessory Power
F28Accessory Power Outlet / Battery
F30Sensing and Diagnostic Module / Parking Brake
F31Body Control Module 4
F32Special Equipment Option / Data Link Connection
F33Body Control Module 8
F34Cargo Lamp
F40CGM - Central Gateway Module
F41Infotainment 1
F42TCP - Telematics Connectivity Platform
F43-
F44-
F45Body Control Module 2
F46Heating, Ventilation, and Air Conditioning / Battery 1
F47Instrument Panel Cluster / Battery
F48Transmission Control Module
F49Body Control Module 1
F50-
F51Battery 1
F52Battery 2
F53-
F54Sunroof
F55Driver Power Seat
F56DC DC TRANS 1
F57DC DC TRANS 2
F58Infotainment 2
Circuit Breakers
1Accessory Power Outlet 2
2Accessory Power Outlet 1 / Cigarette Lighter
3-
4-
Relays
K1Run/Crank
K2Retained Accessory Power / Accessory 1
K4-
K5-