GMC Sierra (2023 – 2026) Fuse Box Location & Diagrams
This guide provides detailed information about the GMC Sierra (2023–2026) fuse box locations & diagrams. It helps owners quickly identify fuse positions, understand circuit protection, and troubleshoot electrical components with confidence. Clear layouts and descriptions make maintenance, repairs, and fuse replacement much easier.
Fuse Box Location
Passenger Compartment Fuse Box
Instrument Panel Fuse Block (Left)
The left instrument panel fuse block access door is on the driver side edge of the instrument panel.
Instrument Panel Fuse Block (Right)
The right instrument panel fuse block access door is on the passenger side edge of the instrument panel.
To access the back of the block:
- Push the tab at the top of fuse block down;
2. Pull the top of the block outward;
3. Reverse Steps 1-2 to reinstall.
Engine Compartment Fuse Box
Fuse Box Diagrams
Passenger Compartment Fuse Box
GMC Sierra (2023 – 2026)
Instrument Panel Fuse Block (Left)
| № | Usage |
|---|---|
| F1 | Rear Heated Seats Left/Right |
| F3 | – |
| F4 | – |
| F5 | – |
| F6 | Front Heated and Ventilated Seats |
| F8 | – |
| F9 | External Object Calculation Module / Park Assist |
| F10 | – |
| F11 | – |
| F12 | Memory Seat Module 2 / Passenger Power Seat |
| F13 | 2024-2026: Export Power Take Off / Special Equipment Option 1 |
| F14 | DLC – Data Link Connector |
| F15 | – |
| F16 | AMP – Amplifier |
| F17 | Multi-Function EndGate |
| F18 | – |
| F20 | Tailgate Module |
| F22 | Rear Sliding Window |
| F23 | Driver Passenger Memory Seat Module 1 / Memory Booster Module |
| F24 | – |
| F25 | – |
| F26 | – |
| F27 | – |
| CB1 | – |
| Relays | |
| K1 | Rear Sliding Window Open |
| K2 | Rear sliding Window Close |
| K3 | MFEG Major HI – Multi-Function EndGate Major High |
| K4 | – |
| K5 | MFEG Minor – Multi-Function EndGate Minor |
| K6 | MFEG Major LO – Mult-Function EndGate Major Low |
| K7 | – |
| K8 | – |
Instrument Panel Fuse Block (Right)
| № | Usage |
|---|---|
| F1 | Right Doors |
| F2 | Left Doors |
| F3 | – |
| F4 | ELM 2 – Electronic Lighting Module 2 |
| F5 | 2023: High Definition localization Module/Instrument Panel Cluster/Heads-up Display/ Humidity/Integrated Center Stack 2024-2026: ELM 7 – Electronic Lighting Module 7 |
| F6 | Front Blower |
| F8 | Left Front Window Switch |
| F10 | Steering Tilt (LD) / UVM (HD) / Electronic Lighting Module 5 |
| F11 | VPM/OHC – Video Processing Module/ Overhead Control Camera |
| F12 | CGM/TCP/COL LCK/DMS(LD) – Central Gateway Module/ Telematics Control Platform/Column Lock/ Driver Monitor System |
| F14 | – |
| F17 | Steering Wheel Controls |
| F18 | – |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | Heated Steering Wheel |
| F23 | – |
| F24 | – |
| F25 | SPOT LAMP LT/RT (LD) – Spot Lamp Left/Right |
| F26 | USB Ports / Special Equipment Option Retained Accessory Power |
| F27 | Accessory Power Outlet / Retained Accessory Power |
| F28 | Accessory Power Outlet/Battery |
| F30 | SDM/ICS/IPC/HUD/HMDTY (HD)/HDLM (LD) – Sensing and Diagnostic Module/Automatic Occupant Sensing |
| F31 | 2023: Body Control Module 3 2024-2026: BCM2 – Body Control Module 2 |
| F32 | RFA WCM AUX JACK/CSM AUX JACK/TBCS – Remote Function Actuator/ Wireless Charging Module/Aux Jack/Center Stack Module Aux Jack/ Trailer Brake Control Switch |
| F33 | BCM 4 – Body Control Module 4 |
| F34 | – |
| F40 | – |
| F41 | – |
| F42 | Electric Park Brake Switch |
| F43 | – |
| F44 | Shifter Interface Board (LD) |
| F45 | Radio Lo |
| F46 | – |
| F47 | – |
| F48 | Transmission Control Module |
| F49 | Body Control Module 1 |
| F50 | – |
| F51 | Battery 1 (HD) |
| F52 | Battery 2 (HD) |
| F53 | – |
| F54 | Sunroof |
| F55 | Driver Power Seat |
| F56 | DC DC TRANS 1 (LD) |
| F57 | DC DC TRANS 2 (LD) |
| F58 | – |
| CB1 | Accessory Power Outlet 1 |
| CB2 | – |
| CB3 | – |
| CB4 | – |
| Relays | |
| K1 | – |
| K2 | Retained Accessory Power/ Accessory 1 |
| K4 | – |
| K5 | – |
Engine Compartment Fuse Box
GMC Sierra (2023 – 2026)
| № | Usage |
|---|---|
| 1 | – |
| 2 | – |
| 3 | Headlamp Left |
| 4 | Headlamp Right |
| 6 | 2023: Exterior Lighting Module 7 |
| 7 | ELM 4 – Electronic Lighting Module 4 |
| 8 | – |
| 9 | 2023: Exterior Lighting Module 5 |
| 10 | ELM 6 – Electronic Lighting Module 6 |
| 11 | BCM 3 – Body Control Module 3 |
| 12 | Rear Window Defogger |
| 13 | Washer Front |
| 14 | – |
| 15 | – |
| 16 | – |
| 17 | IECL1 |
| 19 | DC/AC Inverter |
| 20 | IECR 2 (LD) / EBCM2 (HD) |
| 21 | – |
| 22 | IECL2 |
| 24 | Fuel Heater (DSL) |
| 25 | EBCM1 – Electronic Brake Control Module 1 |
| 26 | – |
| 27 | Horn |
| 28 | Parking Lamp Mirror/ Grill (LD) / Parking Lamp Left (HD) |
| 29 | Parking Lamp Right (HD) |
| 30 | ELM 3 – Electronic Lighting Module 3 |
| 31 | ELM 1 – Electronic Lighting Module 1 |
| 32 | – |
| 33 | Not R/C |
| 34 | Radars (LD) |
| 37 | MISC IP – Headliner Ignition |
| 38 | Seat Fan Ignition |
| 39 | 2024-2026: Trailer Ignition Module |
| 40 | Misc ignition |
| 41 | Trailer Parking Lamp |
| 42 | Tail Lamp Left (HD) |
| 44 | DEFC/ICCM Ignition (LD/HD) / FTZM Ignition (HD) |
| 45 | Secondary Axle Motor |
| 46 | ECM/TCM/TCCM IGN – Engine Control Module / Transmission Control Module / Transfer Case Control Module Ignition |
| 47 | – |
| 48 | – |
| 49 | Transmission Auxiliary Oil Pump (LD) |
| 50 | A/C Clutch |
| 51 | Transfer Case Control Module |
| 52 | Front Wiper |
| 53 | Center High-Mounted Stop Lamp |
| 54 | Tail Lamp Right (HD) |
| 55 | Trailer Back-up Lamp |
| 56 | SADS (LD) / Fuel Tank Zone Module 2 (HD) |
| 57 | TTPM/SBZA – Side Blind Zone Alert |
| 58 | Starter Motor (LD) |
| 60 | Powertrain Sensor 2 (DSL) |
| 61 | Active Hydraulic Steering (HD) |
| 62 | DEFC Batt 1 / CVS – DEFC Battery 1 / Canister Vent Solenoid |
| 63 | Trailer Brake |
| 65 | – |
| 66 | Cooling Fan Motor Left (LD) |
| 67 | – |
| 68 | DEFC Batt 2 |
| 69 | Starter Pinion (LD Gas) / Starter Motor (HD) |
| 71 | Cooling Fan Lower (LD) |
| 72 | Cooling Fan Right (LD) |
| 73 | Trailer Stop/Turn Lamp Left |
| 74 | Trailer Interface Module 2 |
| 75 | Integrated Chassis Control Module |
| 76 | Electric Running Board |
| 78 | Engine Control Module |
| 79 | Cabin Cool Pump 17W (LD) / Auxiliary Battery (HD) |
| 80 | Powertrain Sensor 1 (DSL) |
| 81 | Trailer Stop/Turn Lamp Right |
| 82 | Trailer Interface Module 1 |
| 83 | FTZM – Fuel Tank Zone Module |
| 84 | Trailer Battery |
| 85 | – |
| 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 (HD) |
| 92 | Cool Fan Clutch (HD DSL) / Aeroshutter (LD/HD) |
| Relays | |
| 5 | Rear Window Defogger |
| 18 | DC/AC Inverter |
| 23 | Fuel Heater (DSL) |
| 35 | Parking Lamp |
| 36 | Run/Crank |
| 43 | Secondary Axle Motor |
| 59 | A/C Clutch |
| 64 | Starter Motor (LD) / Cool Fan Clutch (HD DSL) |
| 70 | Starter Pinion (LD Gas) / Starter Motor (HD) |
| 77 | Powertrain |
