GMC Sierra 1500 2026 Fuse Box Info
Passenger compartment fuse box location:
The left instrument panel fuse box is located on the driver side edge of the instrument panel (If equipped with a Work Truck trim).
The left instrument panel fuse box is located under the steering wheel on the driver side. (If equipped with a Uplevel or Base Level trim).
The right instrument panel fuse box is located on the passenger side edge of the instrument panel.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box (Left):
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | Rear Heated Seats Left/Right |
| 3 | - |
| 4 | - |
| 5 | Spare |
| 6 | Heated and Ventilated Seats Left/Right |
| 8 | - |
| 9 | EOCM – End Object Control Module/Park Assist |
| 10 | - |
| 11 | - |
| 12 | Passenger Power Seat |
| 13 | - |
| 14 | Data Link Connector |
| 15 | - |
| 16 | AMP |
| 17 | MFEG - Multifunction Endgate Control |
| 18 | - |
| 20 | Endgate |
| 22 | Rear Sliding Window |
| 23 | Driver and Passenger Memory Seat Module |
| 24 | - |
| 25 | - |
| 26 | - |
| 27 | - |
| Circuit Breakers |
|
| CB1 | - |
| Relays | |
| K1 | Rear Sliding Window Open |
| K2 | Rear Sliding Window Close |
| K3 | MFEG – Multifunction Endgate Control High |
| K4 | - |
| K5 | MFEG – Multifunction Endgate Control Minor |
| K6 | MFEG – Multifunction Endgate Control Low |
| K7 | - |
| K8 | - |
Passenger compartment fuse box (Right - front):
Passenger compartment fuse box (Right - back):
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | Right Doors |
| 2 | Left Doors |
| 3 | - |
| 4 | ELM – Exterior Lighting Module 2 |
| 5 | ELM – Exterior Lighting Module 7 |
| 6 | Front Blower |
| 8 | Left Front Window Switch |
| 10 | Steering Tilt/Upfitter Vehicle Module/Exterior Lighting Module 5 |
| 11 | Video Processing Module/Overhead Control Camera |
| 12 | Central Gateway Module/Telematics Control Platform/Column Lock/ Driver Monitor System |
| 14 | - |
| 17 | Steering Wheel Controls |
| 18 | - |
| 19 | - |
| 20 | - |
| 21 | - |
| 22 | Heated Steering Wheel |
| 23 | - |
| 24 | - |
| 25 | Spot Lamp Left/Right |
| 26 | USB Ports/Special Equipment option Retained Accessory Power |
| 27 | Accessory Power Outlet/Retained Accessory Power |
| 28 | Accessory Power Outlet/Battery |
| 30 | Sensing and Diagnostic Module/Automatic Occupant Sensing/Integrated Center Stack/Instrument Panel Cluster/Heads-up Display/Humidity |
| 31 | Body Control Module 2 |
| 32 | Remote Function Actuator/Wireless Charging Module/Aux Jack/Center Stack Module Aux Jack/Trailer Brake Control Switch |
| 33 | Body Control Module 4 |
| 34 | - |
| 40 | - |
| 41 | - |
| 42 | Electric Park Brake Switch |
| 43 | - |
| 44 | Shifter Interface Board |
| 45 | Radio Low |
| 46 | - |
| 47 | - |
| 48 | Transmission Control Module |
| 49 | Body Control Module 1 |
| 50 | - |
| 51 | Battery 1 |
| 52 | Battery 2 |
| 53 | - |
| 54 | Sunroof |
| 55 | Driver Power Seat |
| 56 | DC/DC Converter Battery 1 |
| 57 | DC/DC Converter Battery 2 |
| 58 | - |
| Circuit Breakers | |
| 1 | Accessory Power Outlet 1 |
| 2 | - |
| 3 | - |
| 4 | - |
| Relays | |
| K1 | - |
| K2 | Retained Accessory Power/Accessory 1 |
| K4 | - |
| K5 | - |
Engine compartment fuse box:
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | - |
| 2 | - |
| 3 | Headlamp Left |
| 4 | Headlamp Right |
| 6 | - |
| 7 | Exterior Lighting Module 4 |
| 8 | - |
| 9 | - |
| 10 | Exterior Lighting Module 6 |
| 11 | Body Control Module 3 |
| 12 | Rear Defog |
| 13 | Washer Front |
| 14 | - |
| 15 | - |
| 16 | - |
| 17 | IECL 1 – Instrument Panel Fuse Block Left 1 |
| 19 | DC/AC Inverter |
| 20 | IECR 2 – Instrument Panel Fuse Block Right 2 |
| 21 | - |
| 22 | IECL 2 |
| 24 | Fuel Heater |
| 25 | EBCM – Electronic Brake Control Module |
| 26 | - |
| 27 | Horn |
| 28 | Park Lamp Mirror/Grill |
| 29 | - |
| 30 | Exterior Lighting Module 3 |
| 31 | Exterior Lighting Module 1 |
| 32 | - |
| 33 | NOT R/C |
| 34 | Radars |
| 37 | MISC IP Headline Ignition |
| 38 | Seat Fan Ignition |
| 39 | TIM IGN – Trailer Interface Module Ignition |
| 40 | MISC Body Ignition |
| 41 | Trailer Parking Lamp |
| 42 | - |
| 44 | DEFC Ignition – Diesel Exhaust Fluid Controller Ignition |
| 45 | Secondary Axle Motor |
| 46 | Engine Control Module/ Transmission Control Module/Integrated Chassis Control Ignition |
| 47 | - |
| 48 | - |
| 49 | Transmission Auxiliary Oil Pump |
| 50 | A/C Clutch |
| 51 | Transfer Case Control Module |
| 52 | Front Wiper |
| 53 | Center High-Mounted Stop Lamp |
| 54 | - |
| 55 | Trailer Back-up Lamp |
| 56 | SADS – Semi Active Damping System |
| 57 | TTPM/SBZA – Side Blind Zone Alert |
| 58 | Starter Motor |
| 60 | PWR/TRN Sensors 2 |
| 61 | - |
| 62 | DEFC Battery 1/Canister Vent Solenoid |
| 63 | Trailer Brake Control Module |
| 65 | - |
| 66 | Cooling Fan Motor Left |
| 67 | - |
| 68 | DEFC Battery 2 |
| 69 | Starter Pinion |
| 71 | Cooling Fan |
| 72 | Cooling Fan Right/Lower |
| 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 Coll Pump |
| 80 | Powertrain Sensor 1 |
| 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 | - |
| 92 | Aeroshutter |
| Relays | |
| 5 | Rear Defog |
| 18 | DC/AC Inverter |
| 23 | Fuel Heater |
| 35 | Park Lamp/Front Grille Lamp |
| 36 | Run/Crank |
| 43 | Secondary Axle Motor |
| 59 | A/C Clutch |
| 64 | Starter Motor |
| 70 | Starter Motor |
| 77 | Powertrain |
