Chevrolet Express 2026 Fuse Box Info
Passenger compartment fuse box location:
The floor console fuse box is located under the driver’s seat.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | - |
| 2 | STR/WHL/SNSR – Steering Wheel Controls |
| 3 | AUX PRK LAMP(S) (CUTAWAY) – Auxiliary Parking Lights |
| 4 | FRT PRK LAMP(S) – Front Parking Lights |
| 5 | TRLR PRK LAMP(S) – Trailer Parking Lights |
| 6 | UPFTR PRK LAMP(S) – Upfitter/Parking Lights |
| 7 | RT REAR PARK LAMP – Right Rear Parking Light |
| 8 | LT REAR PARK LAMP – Left Rear Parking Light |
| 9 | OSRVMSW – Outside View Mirror DK_ULK_UPFTR FCM – Front Camera Module |
| 10 | AIRBAG AOS – Automatic Occupant Sensing |
| 11 | ONSTAR |
| 12 | - |
| 13 | HVAC 2 – Heating Ventilation Air Conditioning 2 |
| 14 | HVAC 1 – Heating Ventilation Air Conditioning 1 |
| 15 | REF LED DISPLAY– Reflected Light Auxiliary Display |
| 16 | UPFTR AUX 1 – Upfitter Auxiliary 1 GAS AMBULANCE |
| 17 | OSRVM HTR – Outside Rear View Mirrors Defogger |
| 18 | REAR DEFOG – Rear Window Defogger |
| 19 | CMPS – Compass |
| 20 | RDO/CHIME – Radio/Chime/SiriusXM Satellite Radio |
| 21 | RFA – Remoe Function Actuator TPM – Tire Pressure Monitor Sensors |
| 22 | IGN SW (DLIS) – Ignition Switch (Discrete Logic Ignition Sensor) PK 3 – Pass Key 3 |
| 23 | I/P CLUSTER – Instrument Panel Cluster |
| 24 | - |
| 25 | HVAC CNTRL – Heating Ventilation Air Conditioning Controls |
| 26 | AUX/TRLR BCK/UP– Auxiliary/Trailer Reverse Lights |
| 27 | TAIL LAMP(S) BCK/UP – Reverse Tail Lights |
| 28 | UPFTR AUX 2/READING LAMP(S) – Upfitter Auxiliary 2 GAS AMBULANCE |
| 29 | REAR BLOWER |
| 30 | UPFTR CTSY LAMP(S) – Upfitter Courtesy Lights AMBULANCE UPFITTER |
| 31 | FRT DR LCK – Front Doors Lock |
| 32 | REAR DR LCK – Rear Doors Lock |
| 33 | CARGO DR UNLCK – Cargo Door Unlock |
| 34 | FRT PASS DR UNLCK– Front Passenger Door Unlock |
| 35 | REAR PASS DR UNLCK– Rear Passenger Door Unlock |
| 36 | DVR DR UNLCK – Driver Door Unlock |
| 37 | - |
| 38 | - |
| Relays | |
| K1 | (HC MICRO) RUN – (High Current Micro) Run/Crank |
| K2 | - |
| K3 | (HC MICRO) PRK LAMPS– (High Current Micro)Parking Lights |
| K4 | (HC MINI) UPFTR AUX 2– (High Current Mini) Upfitter Auxiliary 2 |
| K5 | (HC MICRO) REAR DEFOG– (High Current Micro) Rear Window Defogger |
| K6 | (HC MICRO) RAP – (High Current Micro) Retained Accessory Power |
| Circuit Breaker | |
| CB1 | PWR SEATS – Power Seats |
| CB2 | PWR WINDOW(S) – Power Windows |
Engine compartment fuse box:
| Fuse/Relay N° | Functions |
| Fuses | |
| 1 | ABS MTR – Antilock Brake System Motor |
| 2 | ABS MDL – Antilock Brake System Module |
| 3 | RT STOP/TURN TRLR – Right Trailer Stop/Turn Signal Light |
| 4 | - |
| 5 | - |
| 6 | FSCM IGN – Fuel System Control Module Run/Crank |
| 7 | BCM 5 – Body Control Module 5 |
| 8 | BCM 7 – Body Control Module 7 |
| 9 | BCM 4 – Body Control Module 4 |
| 10 | IPC – Instrument Panel Cluster |
| 11 | TRLR WRG – Trailer Wiring |
| 12 | - |
| 13 | DISPLY MIR – Display Mirror REAR B/U CAMERA – Rear Reverse Camera |
| 14 | WASH Windshield Washer |
| 16 | HORN |
| 17 | TRANS – Transmission |
| 18 | A/C CMPRSR – Air Conditioning Compressor |
| 19 | ECM BATT – Engine Control Module Battery |
| 20 | CUTAWAY LH STP/TRN LAMP – Left Stop/Turn Light Cutaway |
| 21 | LT STOP/TRN TRLR – Left Stop/Turn Light Trailer |
| 22 | CUTAWAY RH STP/TRN LAMP – Right Stop/Turn Light Cutaway |
| 23 | - |
| 24 | FUEL PUMP |
| 25 | AUX PWR OUTLET – Auxiliary Power Outlet |
| 26 | BCM 3 – Body Control Module 3 |
| 27 | SEO – Special Equipment Option |
| 28 | AIRBAG |
| 29 | STR/WHL/SNSR – Steering Wheel Sensor |
| 30 | ENGINE CONTROL MODULE – Engine Control Module Run/Crank |
| 31 | TCM IGN – Transmission Control Module Run/Crank |
| 32 | TCM BATTERY – Transmission Control Module 1 Battery (Auto 6 Speed) |
| 33 | OBSDET – Obstacle Detection/Rear Park Assist Module |
| 34 | - |
| 35 | - |
| 36 | FSCM BATT – Fuel System Control Module Battery |
| 41 | T87A TCM BATT – Transmission Control Module 2 Battery (Auto 8 Speed) |
| 42 | TRLR WRG – Trailer Wiring |
| 43 | - |
| 44 | STRTR SOL – Starter Solenoid |
| 45 | ECM – Engine Control Module PWR/TRN – Powertrain Signal 2 |
| 46 | AC/DC INV – Direct Current/Alternating Current Inverter |
| 47 | - |
| 51 | LT HI BEAM – Left High Beam Headlight |
| 52 | RT HI BEAM – Right High Beam Headlight |
| 53 | LT LO BEAM – Left Low Beam Headlight |
| 54 | RT LO BEAM – Right Low Beam Headligh |
| 55 | WPR – Wipers |
| 56 | CNSTR VENT SOL Canister Vent Solenoid |
| 58 | BCM 2 – Body Control Module 2 |
| 59 | BCM 1 – Body Control Module 1 |
| 61 | ENG OIL SOLENOID– Engine Oil Control Solenoid |
| 62 | O2 SNSR 2 – O2 Sensor 2 |
| 63 | - |
| 64 | MASS AIRFLOW/CANISTER VENT – Mass Airflow Sensor/Canister Purge Solenoid |
| 65 | ODD IGN/INJ – Ignition Coils/Injectors Odd |
| 66 | DRL 2 (LOLVL) – Daytime Running Lights 2 |
| 67 | DRL 1 (UPLVL) – Daytime Running Lights 1 |
| 68 | AUX STOP LAMP(S) – Auxiliary Stoplights |
| 69 | PWR EXT TRAILER – External Power Trailer |
| 70 | UPFTR STOP LAMP(S) – Upfitter Stoplights |
| 71 | FUEL HTR/FLEX FUEL SNSR – Fuel Heater/FlexFuel Sensor |
| 72 | BCM 6 – Body Control Module 6 |
| 73 | LTR/DLC – Lighter/Data Link Connector |
| 74 | FRT BLWR – Front Blower |
| 75 | ENGINE CONTROL MODULE |
| 76 | - |
| 77 | O2 SNSR 1 – O2 Sensor 1 |
| 78 | ECM – Engine Control Module PWR/TRN – Powertrain Signal 1 |
| 79 | EVEN IGN/INJ – Ignition Coils/Injectors Even |
| Relays | |
| 15 | RUN/CRANK |
| 37 | - |
| 38 | FUEL PUMP |
| 39 | CRNK – Crank |
| 40 | A/C CMPRSR – A/C Compressor |
| 48 | - |
| 49 | PWR/TRN – Powertrain |
| 50 | - |
| 57 | - |
| 60 | - |
Auxiliary fuse box (near the fuse box in the engine compartment):
| Fuse/Relay N° | Functions |
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter power control |
| Relays | |
| MR Rel 1 | Upfitter 1 |
| MR Rel 2 | Upfitter 2 |
