Chevrolet Express (2018) – fuse box diagram
Year of production: 2018
Engine Compartment Fuse Block
The fuse block is located in the engine compartment on the driver side of the vehicle.
| Fuse | Usage |
| 1 | ABS motor |
| 2 | ABS module |
| 3 | Right trailer stoplamp/Turnlamp |
| 4 | — |
| 5 | — |
| 6 | Fuel system control module/Ignition |
| 7 | Body Control Module 5 |
| 8 | Body Control Module 7 |
| 9 | Body Control Module 4 |
| 10 | Instrument cluster |
| 11 | Trailer Wiring |
| 12 | — |
| 13 | Interior rear vision camera module |
| 14 | Windshield Washer |
| 16 | Horn |
| 17 | Transmission |
| 18 | A/C |
| 19 | Engine control module battery |
| 20 | Cutaway/Left stoplamp/Turnlamp |
| 21 | Left trailer stoplamp/Turnlamp |
| 22 | Cutaway/Right stoplamp/Turnlamp |
| 23 | — |
| 24 | Fuel Pump |
| 25 | Auxiliary Power Outlet |
| 26 | Body Control Module 3 |
| 27 | Special Equipment Option |
| 28 | Airbag |
| 29 | Steering Wheel Sensor |
| 30 | Engine control module Ignition |
| 31 | Transmission control module/Ignition |
| 32 | Transmission control module 1 battery/Engine control module battery power (gas 6 cyl) |
| 33 | Rear parking aid module |
| 34 | — |
| 35 | — |
| 36 | Fuel System Control Module Battery |
| 41 | Transmission control 2 module battery power |
| 42 | Trailer wiring |
| 43 | — |
| 44 | Starter solenoid |
| 45 | Engine control module/Powertrain |
| 46 | AC DC inverter |
| 47 | Cooling fan – low |
| 51 | Left high-beam headlamp |
| 52 | Right high-beam headlamp |
| 53 | Left low-beam headlamp |
| 54 | Right low-beam headlamp |
| 55 | Wipers |
| 56 | Canister Vent Solenoid |
| 58 | Body Control Module 2 |
| 59 | Body Control Module 1 |
| 61 | Engine oil solenoid |
| 62 | O2 sensor 2 |
| 63 | — |
| 64 | Mass Air Flow/Canister Vent |
| 65 | Ignition/Injectors – odd |
| 66 | Daytime Running Lamps 2 |
| 67 | Daytime Running Lamps 1 |
| 68 | Auxiliary Stop Lamps |
| 69 | External power for trailer |
| 70 | Upfitter stoplamps |
| 71 | Fuel heater/Flex fuel sensor |
| 72 | Body Control Module 6 |
| 73 | Lighter/Data Link Connection |
| 74 | Front blower |
| 75 | V6 fuel injectors |
| 76 | — |
| 77 | O2 sensor 1 |
| 78 | Engine control module/Powertrain |
| 79 | Ignition/Injectors – even |
| Relay | Usage |
| 15 | Run/Crank |
| 37 | — |
| 38 | Fuel Pump |
| 39 | Crank |
| 40 | A/C Compressor |
| 48 | — |
| 49 | Powertrain |
| 50 | — |
| 57 | Cooling fan – low |
| 60 | Fan Control |
Auxiliary Fuse Block
This component is near the fuse block in the engine compartment.
| Fuses | Usage |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter power control |
| MR Rel 1 | Upfitter 1 |
| MR Rel 2 | Upfitter 1 |
Mega Fuse Holder
| Fuses | Usage |
| 1 | Starter motor |
Floor Console Fuse Block
The floor console fuse block is located under the driver seat.
| Fuse | Usage |
| F1 | — |
| F2 | Steering Wheel Sensor |
| F3 | Auxiliary Parking Lamps |
| F4 | Front Park Lamps |
| F5 | Trailer Park Lamps |
| F6 | Upfitter/Parking lamps |
| F7 | Right Rear Park Lamp |
| F8 | Left Rear Park Lamp |
| F9 | Exterior rearview mirror switch |
| F10 | Airbag/Automatic occupant sensing |
| F11 | — |
| F12 | Door lock/unlock control upfitter (if equipped) |
| F13 | HVAC 2 |
| F14 | HVAC 1 |
| F15 | — |
| F16 | Upfitter 1 |
| F17 | Exterior rearview heated mirrors |
| F18 | Rear Window Defogger |
| F19 | Compass |
| F20 | Radio/Chime/ SiriusXM satellite radio |
| F21 | Remote Function Actuator/Tire Pressure Monitor |
| F22 | Ignition Switch/Discrete Logic Ignition Sensor |
| F23 | Instrument Cluster |
| F24 | — |
| F25 | HVAC control |
| F26 | Auxiliary/Trailer reverse lamps |
| F27 | Reverse lamps |
| F28 | Upfitter 2/Reading lamps |
| F29 | Rear blower |
| F30 | Upfitter/Courtesy Lamps |
| F31 | Front Door Lock |
| F32 | Rear Door Lock |
| F33 | Cargo Door Unlock |
| F34 | Passenger Door Unlock |
| F35 | Rear Passenger Door Unlock |
| F36 | Driver Door Unlock |
| F37 | Empty |
| F38 | — |
| Relays | Usage |
| K1 | Run |
| K2 | — |
| K3 | Park Lamps |
| K4 | Upfitter 2 |
| K5 | Rear Defogger |
| K6 | Retained Accessory Power |
| Circuit Breaker | Usage |
| CB1 | Power Seats |
| CB2 | Power Windows |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.