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In this article, you will find information about the fuses of the Chevrolet Express (models 2003, 2004, 2005, 2006, and 2007), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in Chevy Express
The wiring circuits in your vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating.
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.
Location of Fuse Boxes
Floor Console Fuse Block:
The floor console fuse block is located under the driver’s seat.
Engine Compartment Fuse Block:
The fuse block is in the engine compartment on the driver’s side of the vehicle.
The headlamp wiring is protected by a circuit breaker in the lamp switch. An electrical overload will cause the lamps to flicker on and off, or in some cases to remain off. If this happens, have your headlamp wiring checked right away.
Fuse Box Diagrams
2003
Floor Console Fuse Block
| № | Usage |
|---|---|
| 1 | Spare |
| 2 | Outside Rear View Mirror |
| 3 | Courtesy Lamp / SEO |
| 4 | Left Rear Stop/Turn Signal |
| 5 | Cargo Locks |
| 6 | Right Rear Stop/Turn Signal |
| 7 | Driver Locks |
| 8 | Stop / Center High Mounted Stop Lamp |
| 9 | Climate Control 1 |
| 10 | Climate Control |
| 11 | Brakes |
| 12 | Heated Mirror / Defogger |
| 13 | Right Rear Blower |
| 14 | Driver Turn Mirror |
| 15 | Door Locks |
| 16 | Upfitter Park |
| 17 | Not Available |
| 18 | Left Rear Park Lamp |
| 19 | Pass Turn Mirror |
| 20 | Right Rear Park Lamp |
| 21 | Trailer Park Lamp |
| 22 | Front Park Lamp |
| 32 | Auxilary 1 |
| 33 | Auxilary 2 |
| 23 | Window Residual Accessory Power |
| 24 | Auxiliary |
| 25 | Right Rear Defogger |
| 26 | Courtesy Lamp |
| 27 | Cargo Unlock |
| 28 | Driver Unlock |
| 29 | Park Lamp |
| 30 | Door Locks |
| 31 | Pass Unlock |
| 34 | Power Window |
Engine Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | Radio Battery |
| 2 | Powertrain Control Module Battery |
| 3 | Left Rear Turn Lamp |
| 4 | Right Rear Turn Lamp |
| 5 | Backup Lamps Trailer Wiring |
| 6 | Ignition 0 |
| 7 | Stop Lamp |
| 8 | Right Rear Defogger / Heated Mirror |
| 9 | Right Daytime Running Lamp / Turn Signal |
| 10 | Left Daytime Running Lamp / Turn Signal |
| 11 | Truck Body Control Module 4 |
| 12 | Fuel Pump |
| 13 | Trailer |
| 14 | Flasher |
| 15 | Horn |
| 16 | Truck Body Control Module 3 |
| 17 | Trailer Stop/Turn Signal |
| 18 | Truck Body Control Module 2 |
| 19 | Truck Body Control Module |
| 20 | Remote Function Actuator |
| 21 | Engine 2 |
| 22 | Ignition E |
| 23 | Engine 1 |
| 24 | Truck Body Control Module Ignition 1 |
| 25 | Spare |
| 26 | RPA / lnside Rearview Mirror |
| 27 | Crankcase |
| 28 | Brake Transmission Shift Interlock System |
| 29 | Auxiliary Power Outlets |
| 30 | Cigarette Lighter |
| 31 | Instrument Panel Cluster |
| 32 | Air Conditioning |
| 33 | Spare |
| 34 | Vent |
| 35 | Spare |
| 36 | Vehicle Back Up |
| 37 | Supplemental Inflatable Restraint System |
| 38 | Powertrain Control Module Ignition 1 |
| 39 | Oxygen Sensor B |
| 40 | Oxygen Sensor A |
| 41 | Windshield Wipers |
| 42 | Right Headlamp - Low Beam |
| 43 | Left Headlamp - Low Beam |
| 44 | Left Headlamp - High Beam |
| 45 | Right Headlamp - High Beam |
| 46 | Truck Body Control Module - Accessory |
| 47 | Front Windshield Wiper |
| 48 | Anti-Lock Brakes |
| 49 | Ignition A |
| 50 | Trailer |
| 51 | Climate Control Blower |
| 52 | Ignition B |
| 63 | Spare |
| 64 | Spare |
| 53 | Windshield Wiper |
| 54 | Air Conditioning |
| 55 | Spare |
| 56 | Headlamp - High Beam |
| 57 | Fuel Pump |
| 58 | Headlamp - Low Beam |
| 59 | Horn |
| 61 | Starter |
| 62 | Spare |
| 60 | Power Seat |
2004
Floor Console Fuse Block
| № | Usage |
|---|---|
| 1 | Spare |
| 2 | Outside Rear View Mirror |
| 3 | Courtesy Lamp / SEO |
| 4 | Left Rear Stop/Turn Signal |
| 5 | Cargo Locks |
| 6 | Right Rear Stop/Turn Signal |
| 7 | Driver Locks |
| 8 | Stop / Center High Mounted Stop Lamp |
| 9 | Climate Control 1 |
| 10 | Climate Control |
| 11 | Brakes |
| 12 | Heated Mirror / Defogger |
| 13 | Right Rear Blower |
| 14 | Driver Turn Mirror |
| 15 | Door Locks |
| 16 | Upfitter Park |
| 17 | Not Available |
| 18 | Left Rear Park Lamp |
| 19 | Pass Turn Mirror |
| 20 | Right Rear Park Lamp |
| 21 | Trailer Park Lamp |
| 22 | Front Park Lamp |
| 32 | Auxilary 1 |
| 33 | Auxilary 2 |
| 23 | Window Residual Accessory Power |
| 24 | Auxiliary |
| 25 | Right Rear Defogger |
| 26 | Courtesy Lamp |
| 27 | Cargo Unlock |
| 28 | Driver Unlock |
| 29 | Park Lamp |
| 30 | Door Locks |
| 31 | Pass Unlock |
| 34 | Power Window |
Engine Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | Radio Battery |
| 2 | Powertrain Control Module Battery |
| 3 | Left Rear Turn Lamp |
| 4 | Right Rear Turn Lamp |
| 5 | Backup Lamps Trailer Wiring |
| 6 | Ignition 0 |
| 7 | Stop Lamp |
| 8 | Right Rear Defogger / Heated Mirror |
| 9 | Right Daytime Running Lamp / Turn Signal |
| 10 | Left Daytime Running Lamp / Turn Signal |
| 11 | Truck Body Control Module 4 |
| 12 | Fuel Pump |
| 13 | Trailer |
| 14 | Flasher |
| 15 | Horn |
| 16 | Truck Body Control Module 3 |
| 17 | Trailer Stop/Turn Signal |
| 18 | Truck Body Control Module 2 |
| 19 | Truck Body Control Module |
| 20 | Remote Function Actuator |
| 21 | Engine 2 |
| 22 | Ignition E |
| 23 | Engine 1 |
| 24 | Truck Body Control Module Ignition 1 |
| 25 | Spare |
| 26 | RPA / lnside Rearview Mirror |
| 27 | Crankcase |
| 28 | Brake Transmission Shift Interlock System |
| 29 | Auxiliary Power Outlets |
| 30 | Cigarette Lighter |
| 31 | Instrument Panel Cluster |
| 32 | Air Conditioning |
| 33 | Spare |
| 34 | Vent |
| 35 | Spare |
| 36 | Vehicle Back Up |
| 37 | Supplemental Inflatable Restraint System |
| 38 | Powertrain Control Module Ignition 1 |
| 39 | Oxygen Sensor B |
| 40 | Oxygen Sensor A |
| 41 | Windshield Wipers |
| 42 | Right Headlamp - Low Beam |
| 43 | Left Headlamp - Low Beam |
| 44 | Left Headlamp - High Beam |
| 45 | Right Headlamp - High Beam |
| 46 | Truck Body Control Module - Accessory |
| 47 | Front Windshield Wiper |
| 48 | Anti-Lock Brakes |
| 49 | Ignition A |
| 50 | Trailer |
| 51 | Climate Control Blower |
| 52 | Ignition B |
| 63 | Spare |
| 64 | Spare |
| 53 | Windshield Wiper |
| 54 | Air Conditioning |
| 55 | Spare |
| 56 | Headlamp - High Beam |
| 57 | Fuel Pump |
| 58 | Headlamp - Low Beam |
| 59 | Horn |
| 61 | Starter |
| 62 | Spare |
| 60 | Power Seat |
2005
Floor Console Fuse Block
| № | Usage |
|---|---|
| 1 | Spare |
| 2 | Outside Rear View Mirror |
| 3 | Courtesy Lamp / SEO |
| 4 | Left Rear Stop/Turn Signal |
| 5 | Cargo Locks |
| 6 | Right Rear Stop/Turn Signal |
| 7 | Driver Locks |
| 8 | Stop / Center High Mounted Stop Lamp |
| 9 | Climate Control 1 |
| 10 | Climate Control |
| 11 | Brakes |
| 12 | Heated Mirror / Defogger |
| 13 | Right Rear Blower |
| 14 | Driver Turn Mirror |
| 15 | Door Locks |
| 16 | Upfitter Park |
| 17 | Not Available |
| 18 | Left Rear Park Lamp |
| 19 | Pass Turn Mirror |
| 20 | Right Rear Park Lamp |
| 21 | Trailer Park Lamp |
| 22 | Front Park Lamp |
| 32 | Auxilary 1 |
| 33 | Auxilary 2 |
| 23 | Window Residual Accessory Power |
| 24 | Auxiliary |
| 25 | Right Rear Defogger |
| 26 | Courtesy Lamp |
| 27 | Cargo Unlock |
| 28 | Driver Unlock |
| 29 | Park Lamp |
| 30 | Door Locks |
| 31 | Passenger Unlock |
| 34 | Power Window |
Engine Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | Radio Battery |
| 2 | Powertrain Control Module Battery |
| 3 | Left Rear Turn Lamp |
| 4 | Right Rear Turn Lamp |
| 5 | Back-up Lamps Trailer Wiring |
| 6 | Ignition 0 |
| 7 | Stoplamp |
| 8 | Right Rear Defogger / Heated Mirror |
| 9 | Right Daytime Running Lamp / Turn Signal |
| 10 | Left Daytime Running Lamp / Turn Signal |
| 11 | Truck Body Control Module 4 |
| 12 | Fuel Pump |
| 13 | Trailer |
| 14 | Flasher |
| 15 | Horn |
| 16 | Truck Body Control Module 3 |
| 17 | Trailer Stop/Turn Signal |
| 18 | Truck Body Control Module 2 |
| 19 | Truck Body Control Module |
| 20 | Remote Function Actuator |
| 21 | Engine 2 |
| 22 | Ignition E |
| 23 | Engine 1 |
| 24 | Truck Body Control Module Ignition 1 |
| 25 | Spare |
| 26 | RPA / lnside Rearview Mirror |
| 27 | Crankcase |
| 28 | Brake Transmission Shift Interlock System |
| 29 | Auxiliary Power Outlets |
| 30 | Cigarette Lighter |
| 31 | Instrument Panel Cluster |
| 32 | Air Conditioning |
| 33 | Spare |
| 34 | Vent |
| 35 | Spare |
| 36 | Vehicle Back Up |
| 37 | Supplemental Inflatable Restraint System |
| 38 | Powertrain Control Module Ignition 1 |
| 39 | Oxygen Sensor B |
| 40 | Oxygen Sensor A |
| 41 | Windshield Wipers |
| 42 | Right Headlamp - Low Beam |
| 43 | Left Headlamp - Low Beam |
| 44 | Left Headlamp - High Beam |
| 45 | Right Headlamp - High Beam |
| 46 | Truck Body Control Module - Accessory |
| 47 | Front Windshield Wiper |
| 48 | Anti-Lock Brakes |
| 49 | Ignition A |
| 50 | Trailer |
| 51 | Climate Control Blower |
| 52 | Ignition B |
| 63 | Spare |
| 64 | Spare |
| 53 | Windshield Wiper |
| 54 | Air Conditioning |
| 55 | Spare |
| 56 | Headlamp - High Beam |
| 57 | Fuel Pump |
| 58 | Headlamp - Low Beam |
| 59 | Horn |
| 61 | Starter |
| 62 | Spare |
| 60 | Power Seat |
2006
Floor Console Fuse Block
| № | Usage |
|---|---|
| 1 | Spare |
| 2 | Outside Rear View Mirror |
| 3 | Courtesy Lamp / SEO |
| 4 | Left Rear Stop / Turn Signal |
| 5 | Cargo Locks |
| 6 | Right Rear Stop / Turn Signal |
| 7 | Driver Locks |
| 8 | Stop / Center High Mounted Stop Lamp |
| 9 | Climate Control 1 |
| 10 | Climate Control |
| 11 | Brakes |
| 12 | Heated Mirror / Defogger |
| 13 | Right Rear Blower |
| 14 | Driver Turn Mirror |
| 15 | Door Locks |
| 16 | Upfitter Park |
| 17 | Not Available |
| 18 | Left Rear Park Lamp |
| 19 | Pass Turn Mirror |
| 20 | Right Rear Park Lamp |
| 21 | Trailer Park Lamp |
| 22 | Front Park Lamp |
| 32 | Auxilary 1 |
| 33 | Auxilary 2 |
| 23 | Window Residual Accessory Power |
| 24 | Auxiliary |
| 25 | Right Rear Defogger |
| 26 | Courtesy Lamp |
| 27 | Cargo Unlock |
| 28 | Driver Unlock |
| 29 | Park Lamp |
| 30 | Door Locks |
| 31 | Passenger Unlock |
| 34 | Power Window |
Engine Compartment Fuse Block
| Fuse | Usage |
|---|---|
| 1 | Radio Battery |
| 2 | Powertrain Control Module Battery (Gas) FOH, Engine Control Module, Transmission Control Module Battery (Diesel) |
| 3 | Left Rear Turn Lamp |
| 4 | Right Rear Turn Lamp |
| 5 | Back-up Lamps Trailer Wiring |
| 6 | Ignition 0 |
| 7 | Stoplamp |
| 8 | Rear Defogger / Heated Mirror |
| 9 | Right Daytime Running Lamp / Turn Signal |
| 10 | Left Daytime Running Lamp / Turn Signal |
| 11 | Truck Body Control Module 4 |
| 12 | Fuel Pump |
| 13 | Trailer |
| 14 | Hazard Flashers |
| 15 | Horn |
| 16 | Truck Body Control Module 3 |
| 17 | Trailer Stop/Turn Signal |
| 18 | Truck Body Control Module 2 |
| 19 | Truck Body Control Module |
| 20 | Remote Function Actuator |
| 21 | Engine 2 (Gas) Spare (Diesel) |
| 22 | Ignition E |
| 23 | Engine 1 |
| 24 | Truck Body Control Module Ignition 1 |
| 25 | Spare (Gas) Fuel Heater (Diesel) |
| 26 | Inside Rearview Mirror |
| 27 | Crankcase |
| 28 | Brake Transmission Shift Interlock System |
| 29 | Auxiliary Power Outlets |
| 30 | Cigarette Lighter |
| 31 | Instrument Panel Cluster |
| 32 | Air Conditioning |
| 33 | Spare (Gas) Engine Control Module (Diesel) |
| 34 | Canister Vent Solenoid (Gas) Rear Fog Lamps (Diesel) |
| 35 | Spare |
| 36 | Brake Transmission Shift Interlock, Vehicle Back-Up |
| 37 | Airbag |
| 38 | Powertrain Control Module Ignition 1 (Gas) Engine Control Module, Transmission Control Module, Glow Plug Control Module Ignition 1 (Diesel) |
| 39 | Oxygen Sensor B (Gas) Spare (Diesel) |
| 40 | Oxygen Sensor A |
| 41 | Windshield Wipers |
| 42 | Right Headlamp - Low Beam |
| 43 | Left Headlamp - Low Beam |
| 44 | Left Headlamp - High Beam |
| 45 | Right Headlamp - High Beam |
| 46 | Truck Body Controller - Accessory (Gas) Truck Body Controller, Transmission Control Module Accessory (Diesel) |
| 47 | Front Windshield Wiper |
| 48 | Anti-lock Brakes, Vehicle Stability Enhancement System |
| 49 | Ignition A |
| 50 | Trailer |
| 51 | Climate Control Blower |
| 52 | Ignition B |
| 63 | Spare (Gas) Engine Control Module Actuator (Diesel) |
| 64 | Spare |
| 53 | Windshield Wiper |
| 54 | Air Conditioning |
| 55 | Spare (Gas) Rear Fog Lamps (Diesel) |
| 56 | Headlamp - High Beam |
| 57 | Fuel Pump |
| 58 | Headlamp - Low Beam |
| 59 | Horn |
| SPARE (G) ECM (D) | Spare (Gas) Engine Control Module (Diesel) |
| STRTR | Starter |
| PWR SEAT | Power Seat |
2007
Floor Console Fuse Block
| № | Usage |
|---|---|
| 1 | Spare |
| 2 | Outside Rear View Mirror |
| 3 | Courtesy Lamp / SEO |
| 4 | Left Rear Stop/Turn Signal |
| 5 | Cargo Locks |
| 6 | Right Rear Stop/Turn Signal |
| 7 | Driver Locks |
| 8 | Stop / Center High Mounted Stop Lamp |
| 9 | Climate Control 1 |
| 10 | Climate Control |
| 11 | Brakes |
| 12 | Heated Mirror / Defogger |
| 13 | Right Rear Blower |
| 14 | Driver Turn Mirror |
| 15 | Door Locks |
| 16 | Upfitter Park |
| 17 | Not Available |
| 18 | Left Rear Park Lamp |
| 19 | Pass Turn Mirror |
| 20 | Right Rear Park Lamp |
| 21 | Trailer Park Lamp |
| 22 | Front Park Lamp |
| 32 | Auxiliary 1 |
| 33 | Auxiliary 2 |
| 23 | Window Retained Accessory Power |
| 24 | Auxiliary |
| 25 | Rear Window Defogger |
| 26 | Courtesy Lamp |
| 27 | Cargo Unlock |
| 28 | Driver Unlock |
| 29 | Park Lamp |
| 30 | Door Locks |
| 31 | Passenger Unlock |
| 34 | Power Window |
Engine Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | Radio Battery |
| 2 | Powertrain Control Module Battery (Gas) FOH, Engine Control Module, Transmission Control Module Battery (Diesel) |
| 3 | Left Rear Turn Lamp |
| 4 | Right Rear Turn Lamp |
| 5 | Back-up Lamps Trailer Wiring |
| 6 | Ignition 0 |
| 7 | Stoplamp |
| 8 | Rear Defogger / Heated Mirror |
| 9 | Right Daytime Running Lamp / Turn Signal |
| 10 | Left Daytime Running Lamp / Turn Signal |
| 11 | Truck Body Control Module 4 |
| 12 | Fuel Pump |
| 13 | Trailer |
| 14 | Hazard Flashers |
| 15 | Horn |
| 16 | Truck Body Control Module 3 |
| 17 | Trailer Stop/Turn Signal |
| 18 | Truck Body Control Module 2 |
| 19 | Truck Body Control Module |
| 20 | Remote Function Actuator |
| 21 | Engine 2 (Gas) Spare (Diesel) |
| 22 | Ignition E |
| 23 | Engine 1 |
| 24 | Truck Body Control Module Ignition 1 |
| 25 | Spare (Gas) Fuel Heater (Diesel) |
| 26 | Inside Rearview Mirror |
| 27 | Crankcase |
| 28 | Brake Transmission Shift Interlock System |
| 29 | Auxiliary Power Outlets |
| 30 | Cigarette Lighter |
| 31 | Instrument Panel Cluster |
| 32 | Air Conditioning |
| 33 | Spare (Gas) Engine Control Module (Diesel) |
| 34 | Canister Vent Solenoid (Gas) Rear Fog Lamps (Diesel) |
| 35 | SPARE |
| 36 | Brake Transmission Shift Interlock, Vehicle Back-Up |
| 37 | Airbag |
| 38 | Powertrain Control Module Ignition 1 (Gas) Engine Control Module, Transmission Control Module, Glow Plug Control Module Ignition 1 (Diesel) |
| 39 | Oxygen Sensor B (Gas) Spare (Diesel) |
| 40 | Oxygen Sensor A (Gas) Spare (Diesel) |
| 41 | Windshield Wipers |
| 42 | Right Headlamp - Low Beam |
| 43 | Left Headlamp - Low Beam |
| 44 | Left Headlamp - High Beam |
| 45 | Right Headlamp - High Beam |
| 46 | Truck Body Controller - Accessory (Gas) Truck Body Controller, Transmission Control Module Accessory (Diesel) |
| 47 | Front Windshield Wiper |
| 48 | Anti-lock Brakes, Vehicle Stability Enhancement System |
| 49 | Ignition A |
| 50 | Trailer |
| 51 | Climate Control Blower |
| 52 | Ignition B |
| 63 | Spare (Gas), Engine Control Module Actuator (Diesel) |
| 64 | Spare |
| 53 | Windshield Wiper |
| 54 | Air Conditioning |
| 55 | Spare (Gas) Rear Fog Lamps (Diesel) |
| 56 | Headlamp - High Beam |
| 57 | Fuel Pump |
| 58 | Headlamp - Low Beam |
| 59 | Horn |
| SPARE (G) ECM (D) | Spare (Gas) Engine Control Module (Diesel) |
| STRTR | Starter |
| PWR SEAT | Power Seat |