Discover the fuse box and relay locations for the Chevrolet Express 2018-2024 with diagrams. Essential guide to maintaining electrical reliability and performance.
The Chevrolet Express (2018-2024) is a full-size van known for its durability and versatility, catering to both commercial and personal use. Available in various configurations, including cargo and passenger models, it offers ample space for transporting goods, equipment, or up to 15 passengers in the extended version. The Express combines utility with straightforward design, focusing on functionality to serve a range of industries, from delivery services to shuttle operations.
The electrical systems in the Chevrolet Express rely on a well-placed fuse box and relay system to ensure reliable power distribution for its essential features, including lighting, climate control, and more. The main fuse box is located in the engine compartment on the driver’s side, while additional fuse panels may be found inside the cabin, often beneath the dashboard. Relays, which control high-power devices like the fuel pump and air conditioning, are positioned near these fuse boxes, making maintenance and troubleshooting accessible for reliable operation.
MUST READ: DYI – How to Check Car Fuses?
(2018-2024) Chevrolet Express fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Chevrolet Express 2018-2024 fuse assignment
Chevrolet Express Year of production: 2018, 2019, 2020, 2021, 2022, 2023, 2024
Location of Fuse Boxes
Floor Console Fuse Block:
The floor console fuse block is under the driver seat.
Engine Compartment Fuse Block:
The fuse block is in the engine compartment on the driver side of the vehicle. Auxiliary Fuse Block is near the fuse block in the engine compartment.
Fuse Box Diagrams
2018
Floor Console Fuse Block
List of fuses in the Floor Console Fuse Block (2018)
| № | Usage |
|---|---|
| Mini-Fuses | |
| F1 | – |
| F2 | Steering wheel sensor |
| F3 | Auxiliary parking lamps |
| F4 | Front parking lamps |
| F5 | Trailer parking lamps |
| F6 | Upfitter / Parking lamps |
| F7 | Right rear parking lamp |
| F8 | Left rear parking lamp |
| F9 | Exterior rear mirror switch / Door lock-unlock control upfitter |
| F10 | Airbag / Automatic occupant sensing |
| F11 | – / OnStar |
| F12 | ECM batt |
| F13 | HVAC2 |
| F14 | HVAC1 |
| 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 | Upfitter2 / 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 lock |
| F37 | Empty |
| F38 | – |
| Relays | |
| K1 | Run |
| K2 | – |
| K3 | Parking lamps |
| K4 | Upfitter 2 |
| K5 | Rear defogger |
| K6 | Retained accessory power |
| Circuit Breaker | |
| CB1 | Power seats |
| CB2 | Power windows |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2018)
| № | Usage |
|---|---|
| 1 | ABS motor |
| 2 | ABS module |
| 3 | Right trailer stoplamp/Turnlamp |
| 4 | – |
| 5 | – |
| 6 | Fuel system control module / lgnition |
| 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 / lnjectors – odd |
| 66 | Daytime running lamps 2 |
| 67 | Daytime running lamps 1 |
| 68 | Auxiliary stoplamps |
| 69 | External power for trailer |
| 70 | Upfitter stoplamps |
| 71 | Fuel heater / Flex fuel sensor |
| 72 | Body control module 6 |
| 73 | Lighter / Data link connector |
| 74 | Front blower |
| 75 | V6 fuel injectors |
| 76 | – |
| 77 | O2 sensor 1 |
| 78 | Engine control module / Powertrain |
| 79 | Ignition / lnjectors – even |
| Relays | |
| 15 | Run/Crank |
| 37 | – |
| 38 | Fuel pump |
| 39 | Crank |
| 40 | A/C compressor |
| 48 | – |
| 49 | Powertrain |
| 50 | – |
| 57 | Cooling fan – low |
| 60 | Cooling fan control |
| Mega Fuse Holder | |
| 1 | Starter motor |
Auxiliary Fuse Block
| № | Usage |
|---|---|
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter Power Control |
| Relays | |
| MR Relay 1 | Upfitter 1 |
| MR Relay 2 | Upfitter 2 |
2019
Floor Console Fuse Block
List of fuses in the Floor Console Fuse Block (2019)
| № | Usage |
|---|---|
| Mini-Fuses | |
| F1 | – |
| F2 | Steering wheel sensor |
| F3 | Auxiliary parking lamps |
| F4 | Front parking lamps |
| F5 | Trailer parking lamps |
| F6 | Upfitter / Parking lamps |
| F7 | Right rear parking lamp |
| F8 | Left rear parking lamp |
| F9 | Exterior rear mirror switch / Door lock-unlock control upfitter / Front camera module |
| F10 | Airbag / Automatic occupant sensing |
| F11 | – / OnStar |
| F12 | ECM batt V6 gas |
| F13 | HVAC2 |
| F14 | HVAC1 |
| F15 | Reflected LED display |
| F16 | Upfitter aux 1 / Gas ambulance |
| F17 | Heated outside 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 tail lamps |
| F28 | Upfitter2 / Reading lamps / Ambulance |
| 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 lock |
| F37 | – |
| F38 | – |
| Relays | |
| K1 | Run |
| K2 | – |
| K3 | Parking lamps |
| K4 | Upfitter 2 |
| K5 | Rear window defogger |
| K6 | Retained accessory power |
| Circuit Breaker | |
| CB1 | Power seats |
| CB2 | Power windows |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2019)
| № | Usage |
|---|---|
| 1 | ABS motor |
| 2 | ABS module |
| 3 | Right trailer stoplamp / Turn signal lamp |
| 4 | – |
| 5 | – |
| 6 | Fuel system control module / lgnition |
| 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 / Turn signal lamp |
| 21 | Left trailer stoplamp / Turn signal lamp |
| 22 | Cutaway / Right stoplamp / Turn signal lamp |
| 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 / lgnition |
| 31 | Transmission control module Ignition |
| 32 | Transmission control module 1 battery |
| 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 | – |
| 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 airflow / Canister vent |
| 65 | Ignition / lnjectors – odd |
| 66 | Daytime running lamps 2 |
| 67 | Daytime running lamps 1 |
| 68 | Auxiliary stoplamps |
| 69 | External power for trailer |
| 70 | Upfitter stoplamps |
| 71 | Fuel heater / FlexFuel sensor |
| 72 | Body control module 6 |
| 73 | Lighter / Data link connector |
| 74 | Front blower |
| 75 | Engine control module diesel |
| 76 | – |
| 77 | O2 sensor 1 |
| 78 | Engine control module / Powertrain |
| 79 | Ignition / Injectors – even |
| Relays | |
| 15 | Run/Crank |
| 37 | – |
| 38 | Fuel pump |
| 39 | Crank |
| 40 | A/C compressor |
| 48 | – |
| 49 | Powertrain |
| 50 | – |
| 57 | – |
| 60 | – |
| Mega Fuse Holder | |
| 1 | Starter motor |
Auxiliary Fuse Block
| № | Usage |
|---|---|
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter Power Control |
| Relays | |
| MR Relay 1 | Upfitter 1 |
| MR Relay 2 | Upfitter 2 |
2020
Floor Console Fuse Block
List of fuses in the Floor Console Fuse Block (2020)
| № | Usage |
|---|---|
| Mini-Fuses | |
| F1 | – |
| F2 | Steering wheel sensor |
| F3 | Auxiliary parking lamps |
| F4 | Front parking lamps |
| F5 | Trailer parking lamps |
| F6 | Upfitter / Parking lamps |
| F7 | Right rear parking lamp |
| F8 | Left rear parking lamp |
| F9 | Exterior rear mirror switch / Door lock-unlock control upfitter / Front camera module |
| F10 | Airbag / Automatic occupant sensing |
| F11 | – / OnStar |
| F12 | ECM batt V6 gas |
| F13 | HVAC2 |
| F14 | HVAC1 |
| F15 | Reflected LED display |
| F16 | Upfitter aux 1 / Gas ambulance |
| F17 | Heated outside 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 tail lamps |
| F28 | Upfitter2 / Reading lamps / Ambulance |
| 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 lock |
| F37 | – |
| F38 | – |
| Relays | |
| K1 | Run |
| K2 | – |
| K3 | Parking lamps |
| K4 | Upfitter 2 |
| K5 | Rear window defogger |
| K6 | Retained accessory power |
| Circuit Breaker | |
| CB1 | Power seats |
| CB2 | Power windows |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2020)
| № | Usage |
|---|---|
| 1 | ABS motor |
| 2 | ABS module |
| 3 | Right trailer stoplamp / Turn signal lamp |
| 4 | – |
| 5 | – |
| 6 | Fuel system control module / lgnition |
| 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 | Left stop/turn cutaway lamp |
| 21 | Left stop/turn trailer lamp |
| 22 | Right stop/turn cutaway lamp |
| 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 / lgnition |
| 31 | Transmission control module Ignition |
| 32 | Transmission control module 1 battery |
| 33 | Rear parking aid module |
| 34 | – |
| 35 | – |
| 36 | Fuel system control module battery |
| 41 | Transmission control module 2, battery signal |
| 42 | Trailer wiring |
| 43 | – |
| 44 | Starter solenoid |
| 45 | Engine control module, powertrain signal 2 |
| 46 | DC-AC inverter |
| 47 | – |
| 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 airflow / Canister vent |
| 65 | Ignition coils / injectors – odd |
| 66 | Daytime running lamps 2 |
| 67 | Daytime running lamps 1 |
| 68 | Auxiliary stoplamps |
| 69 | External power for trailer |
| 70 | Upfitter stoplamps |
| 71 | Fuel heater / FlexFuel sensor |
| 72 | Body control module 6 |
| 73 | Lighter / Data link connector |
| 74 | Front blower |
| 75 | Engine control module |
| 76 | – |
| 77 | O2 sensor 1 |
| 78 | Engine control module, powertrain signal 1 |
| 79 | Ignition coils / injectors – even |
| Relays | |
| 15 | Run/Crank |
| 37 | – |
| 38 | Fuel pump |
| 39 | Crank |
| 40 | A/C compressor |
| 48 | – |
| 49 | Powertrain |
| 50 | – |
| 57 | – |
| 60 | – |
| Mega Fuse Holder | |
| 1 | Starter motor |
Auxiliary Fuse Block
| № | Usage |
|---|---|
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter Power Control |
| Relays | |
| MR Relay 1 | Upfitter 1 |
| MR Relay 2 | Upfitter 2 |
2021
Floor Console Fuse Block
List of fuses in the Floor Console Fuse Block (2021)
| № | Usage |
|---|---|
| Mini-Fuses | |
| F1 | – |
| F2 | Steering wheel sensor |
| F3 | Auxiliary parking lamps |
| F4 | Front parking lamps |
| F5 | Trailer parking lamps |
| F6 | Upfitter / Parking lamps |
| F7 | Right rear parking lamp |
| F8 | Left rear parking lamp |
| F9 | Exterior rear mirror switch / Door lock-unlock control upfitter / Front camera module |
| F10 | Airbag / Automatic occupant sensing |
| F11 | – / OnStar |
| F12 | – |
| F13 | HVAC2 |
| F14 | HVAC1 |
| F15 | Reflected LED display |
| F16 | Upfitter aux 1 / Gas ambulance |
| F17 | Heated outside 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 tail lamps |
| F28 | Upfitter 2 / Reading lamps / Ambulance |
| F29 | Rear blower |
| F30 | Upfitter/Courtesy lamps |
| F31 | Front door lock |
| F32 | Rear door lock |
| F33 | Cargo door unlock |
| F34 | Front passenger door unlock |
| F35 | Rear passenger door unlock |
| F36 | Driver door unlock |
| F37 | – |
| F38 | – |
| Relays | |
| K1 | Run |
| K2 | – |
| K3 | Parking lamps |
| K4 | Upfitter 2 |
| K5 | Rear window defogger |
| K6 | Retained accessory power |
| Circuit Breaker | |
| CB1 | Power seats |
| CB2 | Power windows |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2021)
| № | Usage |
|---|---|
| 1 | ABS motor |
| 2 | ABS module |
| 3 | Right trailer stoplamp / Turn signal lamp |
| 4 | – |
| 5 | – |
| 6 | Fuel system control module / lqnition |
| 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 | Left stop/turn cutaway lamp |
| 21 | Left stop/turn trailer lamp |
| 22 | Right stop/turn cutaway lamp |
| 23 | NOX Sensor (Diesel only) |
| 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 |
| 33 | Rear parking aid module |
| 34 | NOX Sensor (Diesel only) |
| 35 | Fuel heater control module (Diesel only) |
| 36 | Fuel system control module battery |
| 41 | Transmission control module 2, battery signal |
| 42 | Trailer wiring |
| 43 | Electro viscous fan clutch (Diesel only) |
| 44 | Starter solenoid |
| 45 | Engine control module, powertrain signal 2 |
| 46 | DC-AC inverter |
| 47 | – |
| 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 / Crankcase vent heater (Diesel only) |
| 62 | O2 sensor 2 |
| 63 | – |
| 64 | Mass airflow / Canister vent |
| 65 | Ignition coils / Injectors -odd |
| 66 | Daytime running lamps 2 |
| 67 | Daytime running lamps 1 |
| 68 | Auxiliary stoplamps |
| 69 | External power for trailer |
| 70 | Upfitter stoplamps |
| 71 | Fuel heater / FlexFuel sensor |
| 72 | Body control module 6 |
| 73 | Lighter / Data link connector |
| 74 | Front blower |
| 75 | Engine control module |
| 76 | Soot sensors (Diesel only) |
| 77 | O2 sensor 1 |
| 78 | Engine control module / Powertrain signal 1 |
| 79 | Ignition coils / Injectors – even |
| Relays | |
| 15 | Run/Crank |
| 37 | NOX Sensor (Diesel only) |
| 38 | Fuel pump |
| 39 | Crank |
| 40 | A/C compressor |
| 48 | Electro viscous fan clutch (Diesel only) |
| 49 | Powertrain |
| 50 | – |
| 57 | – |
| 60 | – |
| Mega Fuse Holder | |
| 1 | Starter motor |
Auxiliary Fuse Block
| № | Usage |
|---|---|
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter Power Control |
| Relays | |
| MR Relay 1 | Upfitter 1 |
| MR Relay 2 | Upfitter 2 |
2022
Floor Console Fuse Block
List of fuses in the Floor Console Fuse Block (2022)
| № | Usage |
|---|---|
| Mini-Fuses | |
| F1 | – |
| F2 | Steering Wheel Sensor |
| F3 | Auxiliary Parking Lamps |
| F4 | Front Parking Lamps |
| F5 | Trailer Parking Lamps |
| F6 | Upfitter / Parking Lamps |
| F7 | Right Rear Parking Lamp |
| F8 | Left Rear Parking Lamp |
| F9 | Outside View Mirror Switch / Front Camera Module |
| F10 | Airbag / Automatic Occupant Sensing |
| F11 | – / OnStar |
| F12 | – |
| F13 | HVAC2 |
| F14 | HVAC1 |
| F15 | Reflected LED Display |
| F16 | Upfitter Aux 1 / Gas Ambulance |
| F17 | Heated Outside 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 / Pass Key 3 |
| F23 | Instrument Cluster |
| F24 | – |
| F25 | HVAC Control |
| F26 | Auxiliary / Trailer Reverse Lamps |
| F27 | Reverse Tail Lamps |
| F28 | Upfitter 2 / Gas Ambulance |
| F29 | Rear Blower |
| F30 | Upfitter / Courtesy Lamps |
| F31 | Front Door Lock |
| F32 | Rear Door Lock |
| F33 | Cargo Door Unlock |
| F34 | Front Passenger Door Unlock |
| F35 | Rear Passenger Door Unlock |
| F36 | Driver Door Unlock |
| F37 | – |
| F38 | – |
| Relays | |
| K1 | Run |
| K2 | – |
| K3 | Parking Lamps |
| K4 | Upfitter 2 |
| K5 | Rear Window Defogger |
| K6 | Retained Accessory Power |
| Circuit Breaker | |
| CB1 | Power Seats |
| CB2 | Power Windows |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2022)
| № | Usage |
|---|---|
| 1 | ABS Motor |
| 2 | ABS Module |
| 3 | Right Trailer Stoplamp / Turn Signal Lamp |
| 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 | Left Stop/Turn Cutaway Lamp |
| 21 | Left Stop/Turn Trailer Lamp |
| 22 | Right Stop/Turn Cutaway Lamp |
| 23 | NOX Sensor (Diesel Only) |
| 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 |
| 33 | Rear Parking Aid Module |
| 34 | NOX Sensor (Diesel Only) |
| 35 | Fuel Heater Control Module (Diesel Only) |
| 36 | Fuel System Control Module Battery |
| 41 | Transmission Control Module 2, Battery Signal |
| 42 | Trailer Wiring |
| 43 | Electro Viscous Fan Clutch (Diesel Only) |
| 44 | Starter Solenoid |
| 45 | Engine Control Module / Powertrain Signal 2 |
| 46 | DC-AC Inverter |
| 47 | Fan Low Speed |
| 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 / Crankcase Vent Heater (Diesel Only) |
| 62 | O2 Sensor 2 |
| 63 | – |
| 64 | Mass Airflow / Canister Vent |
| 65 | Ignition Coils / lnjectors -Odd |
| 66 | Daytime Running Lamps 2 |
| 67 | Daytime Running Lamps 1 |
| 68 | Auxiliary Stoplamps |
| 69 | External Power for Trailer |
| 70 | Upfitter Stoplamps |
| 71 | Fuel Heater / FlexFuel Sensor |
| 72 | Body Control Module 6 |
| 73 | Lighter / Data Link Connector |
| 74 | Front Blower |
| 75 | Engine Control Module |
| 76 | Soot Sensors (Diesel Only) |
| 77 | O2 Sensor 1 |
| 78 | Engine Control Module / Powertrain Signal 1 |
| 79 | Ignition Coils/lnjectors – Even |
| Relays | |
| 15 | Run/Crank |
| 37 | NOX Sensor (Diesel Only) |
| 38 | Fuel Pump |
| 39 | Crank |
| 40 | A/C Compressor |
| 48 | Electro Viscous Fan Clutch (Diesel Only) |
| 49 | Powertrain |
| 50 | – |
| 57 | Fan Low Speed |
| 60 | Fan Control |
Auxiliary Fuse Block
| № | Usage |
|---|---|
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter Power Control |
| Relays | |
| MR Relay 1 | Upfitter 1 |
| MR Relay 2 | Upfitter 2 |
2023
Floor Console Fuse Block
List of fuses in the Floor Console Fuse Block (2023)
| № | Usage |
|---|---|
| Mini-Fuses | |
| F1 | – |
| F2 | Steering Wheel Sensor |
| F3 | Auxiliary Parking Lamps |
| F4 | Front Parking Lamps |
| F5 | Trailer Parking Lamps |
| F6 | Upfitter / Parking Lamps |
| F7 | Right Rear Parking Lamp |
| F8 | Left Rear Parking Lamp |
| F9 | Outside View Mirror Switch / Front Camera Module |
| F10 | Airbag / Automatic Occupant Sensing |
| F11 | – / OnStar |
| F12 | – |
| F13 | HVAC2 |
| F14 | HVAC1 |
| FI 5 | Reflected LED Display |
| F16 | Upfitter Aux1 / Gas Ambulance |
| F17 | Heated Outside 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 / Pass Key 3 |
| F23 | Instrument Cluster |
| F24 | – |
| F25 | HVAC Control |
| F26 | Auxiliary / Trailer Reverse Lamps |
| F27 | Reverse Tail Lamps |
| F28 | Upfitter 2 / Gas Ambulance |
| F29 | Rear Blower |
| F30 | Upfitter / Courtesy Lamps |
| F31 | Front Door Lock |
| F32 | Rear Door Lock |
| F33 | Cargo Door Unlock |
| F34 | Front Passenger Door Unlock |
| F35 | Rear Passenger Door Unlock |
| F36 | Driver Door Unlock |
| F37 | – |
| F38 | – |
| Relays | |
| K1 | Run |
| K2 | – |
| K3 | Parking Lamps |
| K4 | Upfitter 2 |
| K5 | Rear Window Defogger |
| K6 | Retained Accessory Power |
| Circuit Breaker | |
| CB1 | Power Seats |
| CB2 | Power Windows |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2023)
| № | Usage |
|---|---|
| 1 | ABS Motor |
| 2 | ABS Module |
| 3 | Right Trailer Stoplamp / Turn Signal Lamp |
| 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 | Left Stop/Turn Cutaway Lamp |
| 21 | Left Stop/Turn Trailer Lamp |
| 22 | Right Stop/Turn Cutaway Lamp |
| 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 |
| 33 | Rear Parking Aid Module |
| 34 | – |
| 35 | – |
| 36 | Fuel System Control Module Battery |
| 41 | Transmission Control Module 2 / Battery Power |
| 42 | Trailer Wiring |
| 43 | – |
| 44 | Starter Solenoid |
| 45 | Engine Control Module / Powertrain Signal 2 |
| 46 | DC-AC Inverter |
| 47 | Fan Low Speed |
| 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 Airflow / Canister Vent |
| 65 | Ignition Coils / lnjectors – Odd |
| 66 | Daytime Running Lamps 2 |
| 67 | Daytime Running Lamps 1 |
| 68 | Auxiliary Stoplamps |
| 69 | External Power for Trailer |
| 70 | Upfitter Stoplamps |
| 71 | Fuel Heater / FlexFuel Sensor |
| 72 | Body Control Module 6 |
| 73 | Lighter / Data Link Connector |
| 74 | Front Blower |
| 75 | Engine Control Module |
| 76 | – |
| 77 | O2 Sensor 1 |
| 78 | Engine Control Module / Powertrain Signal 1 |
| 79 | Ignition Coils / lnjectors – Even |
| Relays | |
| 15 | Run/Crank |
| 37 | – |
| 38 | Fuel Pump |
| 39 | Crank |
| 40 | A/C Compressor |
| 48 | – |
| 49 | Powertrain |
| 50 | – |
| 57 | – |
| 60 | – |
Auxiliary Fuse Block
| № | Usage |
|---|---|
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter Power Control |
| Relays | |
| MR Relay 1 | Upfitter 1 |
| MR Relay 2 | Upfitter 2 |
2024
Floor Console Fuse Block
List of fuses in the Floor Console Fuse Block (2024)
| № | Usage |
|---|---|
| Mini-Fuses | |
| F1 | – |
| F2 | Steering Wheel Sensor |
| F3 | Auxiliary Parking Lamps |
| F4 | Front Parking Lamps |
| F5 | Trailer Parking Lamps |
| F6 | Upfitter / Parking Lamps |
| F7 | Right Rear Parking Lamp |
| F8 | Left Rear Parking Lamp |
| F9 | Outside View Mirror Switch / Front Camera Module |
| F10 | Airbag / Automatic Occupant Sensing |
| F11 | – / OnStar |
| F12 | – |
| F13 | HVAC2 |
| F14 | HVAC1 |
| FI 5 | Reflected LED Display |
| F16 | Upfitter Aux1 / Gas Ambulance |
| F17 | Heated Outside 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 / Pass Key 3 |
| F23 | Instrument Cluster |
| F24 | – |
| F25 | HVAC Control |
| F26 | Auxiliary / Trailer Reverse Lamps |
| F27 | Reverse Tail Lamps |
| F28 | Upfitter 2 / Gas Ambulance |
| F29 | Rear Blower |
| F30 | Upfitter / Courtesy Lamps |
| F31 | Front Door Lock |
| F32 | Rear Door Lock |
| F33 | Cargo Door Unlock |
| F34 | Front Passenger Door Unlock |
| F35 | Rear Passenger Door Unlock |
| F36 | Driver Door Unlock |
| F37 | – |
| F38 | – |
| Relays | |
| K1 | Run |
| K2 | – |
| K3 | Parking Lamps |
| K4 | Upfitter 2 |
| K5 | Rear Window Defogger |
| K6 | Retained Accessory Power |
| Circuit Breaker | |
| CB1 | Power Seats |
| CB2 | Power Windows |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2024)
| № | Usage |
|---|---|
| 1 | ABS Motor |
| 2 | ABS Module |
| 3 | Right Trailer Stoplamp / Turn Signal Lamp |
| 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 | Left Stop/Turn Cutaway Lamp |
| 21 | Left Stop/Turn Trailer Lamp |
| 22 | Right Stop/Turn Cutaway Lamp |
| 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 |
| 33 | Rear Parking Aid Module |
| 34 | – |
| 35 | – |
| 36 | Fuel System Control Module Battery |
| 41 | Transmission Control Module 2 / Battery Power |
| 42 | Trailer Wiring |
| 43 | – |
| 44 | Starter Solenoid |
| 45 | Engine Control Module / Powertrain Signal 2 |
| 46 | DC-AC Inverter |
| 47 | Fan Low Speed |
| 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 Airflow / Canister Vent |
| 65 | Ignition Coils / lnjectors -Odd |
| 66 | Daytime Running Lamps 2 |
| 67 | Daytime Running Lamps 1 |
| 68 | Auxiliary Stoplamps |
| 69 | External Power for Trailer |
| 70 | Upfitter Stoplamps |
| 71 | Fuel Heater / FlexFuel Sensor |
| 72 | Body Control Module 6 |
| 73 | Lighter / Data Link Connector |
| 74 | Front Blower |
| 75 | Engine Control Module |
| 76 | – |
| 77 | O2 Sensor 1 |
| 78 | Engine Control Module / Powertrain Signal 1 |
| 79 | Ignition Coils / lnjectors – Even |
| Relays | |
| 15 | Run/Crank |
| 37 | – |
| 38 | Fuel Pump |
| 39 | Crank |
| 40 | A/C Compressor |
| 48 | – |
| 49 | Powertrain |
| 50 | – |
| 57 | – |
| 60 | |
Auxiliary Fuse Block
| № | Usage |
|---|---|
| Fuses | |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter Power Control |
| Relays | |
| MR Relay 1 | Upfitter 1 |
| MR Relay 2 | Upfitter 2 |
Conclusion
The Chevrolet Express (2018-2024) offers a practical and durable design, ideal for diverse needs. Regular inspection of the fuse box and relays ensures dependable electrical performance.
