Fuses and relays Chevrolet Express (2003-2020)

Fuse Layout Chevrolet Express 2003-2020

Fuses and relays Chevrolet Express (2003-2020)

Fuse box location

Floor Console Fuse Box

It is located under the driver’s seat.Fuses and relays Chevrolet Express (2003-2020)

Engine Compartment

It is located on the driver’s side of the engine compartment.Fuses and relays Chevrolet Express (2003-2020)

Fuse box diagrams

2003, 2004, 2005, 2006, 2007

Floor Console Fuse Box

Fuses and relays Chevrolet Express (2003-2020)

Assignment of the fuses and relay in the Floor Console Fuse Box (2003-2007)

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
Circuit Breaker
34 Power Window
Relays
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
Engine Compartment

Fuses and relays Chevrolet Express (2003-2020)

Assignment of the fuses and relay in the Engine Compartment (2003-2007)

Usage
1 Radio Battery
2 Gasoline: Powertrain Control Module Battery
Diesel: FOH, Engine Control Module, Transmission 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 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 Gasoline: Engine 2
Diesel: Spare
22 Ignition E
23 Engine 1
24 Truck Body Control Module Ignition 1
25 Gasoline: Spare
Diesel: Fuel Heater
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 Gasoline: Spare
Diesel: Engine Control Module
34 Gasoline: Canister Vent Solenoid
Diesel: Rear Fog Lamps
35 Spare
36 Brake Transmission Shift Interlock, Vehicle Back-Up
37 Airbag
38 Gasoline: Powertrain Control Module Ignition 1
Diesel: Engine Control Module, Transmission Control Module, Glow Plug Control Module Ignition 1
39 Gasoline: Oxygen Sensor B
Diesel: Spare
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 Gasoline: Truck Body Controller- Accessory
Diesel: Truck Body Controller, Transmission Control Module Accessory
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 Gasoline: Spare
Diesel: Engine Control Module Actuator
64 Spare
Relays
53 Windshield Wiper
54 Air Conditioning
55 Gasoline: Spare
Diesel: Rear Fog Lamps
56 Headlamp – High Beam
57 Fuel Pump
58 Headlamp – Low Beam
59 Horn
62 /
SPARE (G), ECM (D)
Gasoline: Spare
Diesel: Engine Control Module
61 / STRTR Starter
Circuit Breaker
60 /
PWR SEAT
2003-2005: Power Window (#60)
2006-2007: Power Seat

2008, 2009

Floor Console Fuse Box

Fuses and relays Chevrolet Express (2003-2020)

Assignment of the fuses and relay in the Floor Console Fuse Box (2008, 2009)

Usage
1 Climate Control 2 (HVAC)
2 Compass
3 Ignition Switch, Theft Deterrent System Module (PK3)
4 Upfitter Courtesy Lamps
5 Climate Control 1 (HVAC)
6 Empty
7 Instrument Panel Cluster
8 Audio System, Chime
9 Auxiliary Park Lamp
10 Auxiliary Trailer Back-up Lamps
11 Remote Function Actuator, Tire Pressure Monitor (TPM)
12 Climate Control (HVAC) Controls
13 Trailer Park Lamps
14 Front Park Lamps
15 Taillamps, Back-up Lamps
16 Empty
17 Steering Wheel Sensor
18 Outside Rearview Mirror Switch
19 Empty
20 Empty
21 Rear Defogger
22 Outside Rearview Mirror Heater
23 Empty
24 Empty
25 Cargo Door Unlock
26 Rear Door Lock
27 Front Door Lock
28 Rear Passenger Door Unlock
29 Upfitter Park Lamps
30 Front Passenger Door Unlock
31 Driver Door Unlock
32 Airbag System, Automatic Occupant Sensing (AOS) System
33 Right Rear Park Lamp
34 Left Rear Park Lamp
35 Upfitter Auxiliary 2 (J-Case)
36 Upfitter Auxiliary 1 (J-Case)
37 Rear Blower (J-Case)
38 Empty (J-Case)
39 Run (High Current Micro)
40 Park Lamps (High Current Micro)
41 Empty (Mini Micro)
42 Upfitter Auxiliary 2 (High Current ISO Relay)
43 Retained Accessory Power (RAP) (High Current Micro)
44 Rear Defogger (High Current Micro)
Circuit Breaker
45 Power Window
46 Power Seats
Engine Compartment

Fuses and relays Chevrolet Express (2003-2020)

Assignment of the fuses and relay in the Engine Compartment (2008, 2009)

Usage
1 Left High-Beam Headlamp
2 Fuel Pump
3 Empty
4 Diesel: Fuel Heater
5 Right High-Beam Headlamp
6 Empty
7 Left Low-Beam Headlamp
8 Right Stoplamp, Trailer Turn Signal
9 Right Low-Beam Headlamp
10 Daytime Running Lamps 2 (DRL)
11 Gasoline: Fuel System Control Module Ignition
12 Daytime Running Lamps 1 (DRL)
13 Auxiliary Stoplamp
14 Diesel: Fuel Operated Heater Module
15 Gasoline: Fuel System Control Module Battery
16 Left Stoplamp, Trailer Turn Signal
17 Gasoline: Canister Vent Solenoid
18 Empty
19 Empty
20 Body Control Module 1
21 Special Equipment Option (SEO)
22 Body Control Module 4
23 Body Control Module 6
24 Empty
25 Body Control Module 7
26 Body Control Module 3
27 Body Control Module 5
28 Empty
29 Empty
30 Instrument Panel Cluster
31 Empty
32 Brake Switch
33 Auxiliary Power Outlet
34 Airbag
35 Trailer Wiring
36 Gasoline: Steering Wheel Sensor
37 Body Control Module 2
38 Cigarette Lighter, Data Link Controller
39 Windshield Wiper
40 Empty
41 Windshield Washer
42 Empty
43 Horn
44 Transmission Control Module Battery
45 Empty
46 Gasoline: Oxygen Sensor 1
47 Transmission Control Module Ignition
48 Engine Control Module Ignition
49 Mass Airflow Sensor, Canister Vent
50 Engine Control Module, Powertrain
51 Transmission
52 Gasoline: Even Ignition Injectors
53 Diesel: Glow Plug Module
54 Engine Control Module Battery
55 Gasoline: Odd Ignition Injectors
56 Gasoline: Oxygen Sensor 2
57 Air Conditioning Compressor
58 Diesel: Fan Clutch
59 Gasoline: V6 Fuel Injectors
60 Antilock Brake System Module (J-Case)
61 Antilock Brake System Motor (J-Case)
62 Trailer Wiring (J-Case)
63 Empty
64 Starter Solenoid (J-Case)
65 Diesel: Engine Control Module (ECM), Powertrain (J-Case)
66 Front Blower (J-Case)
67 Empty
77 Body BEC (Mega Fuse)
Relays
68 Empty
69 Run, Crank (High Current Micro)
70 Windshield Wiper High (High Current Micro)
71 Windshield Wiper (High Current Micro)
72 Fuel Pump (Mini Micro)
73 Crank (High Current Micro)
74 Air Conditioning Compressor (Mini Micro)
75 Fan Clutch (Solid State)
76 Powertrain (High Current Micro)

2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020

Floor Console Fuse Box

Fuses and relays Chevrolet Express (2003-2020)

Assignment of the fuses and relay in the Floor Console Fuse Box (2010-2020)

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
2019: Exterior rear mirror switch/ Door lock-unlock control upfitter/Front camera module
F10 Airbag/Automatic occupant sensing
F11 OnStar (If Equipped)
F12 Door lock/unlock control upfitter (if equipped)
2019: ECM batt V6 gas
F13 Heating, Ventilation and Air Conditioning 2
F14 Heating, Ventilation and Air Conditioning 1
F15 2010-2019: Not Used.
2020: Reflected LED display
F16 Upfitter aux 1 / Gas ambulance
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 Heating, Ventilation and Air Conditioning control
F26 Auxiliary/Trailer reverse lamps
F27 Reverse 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 Passenger Door Unlock
F35 Rear Passenger Door Unlock
F36 Driver Door Unlock
F37 Empty
F38
Relays
K1 Run (High Current Micro)
K2 Empty (High Current Micro)
K3 Park Lamps (High Current Micro)
K4 Upfitter Auxiliary 2 (High Current Mini)
K5 Rear Defogger (High Current Micro)
K6 Retained Accessory Power (RAP) (High Current Micro)
Circuit Breaker
CB1 Power Seats
CB2 Power Windows
Engine Compartment

Fuses and relays Chevrolet Express (2003-2020)

Assignment of the fuses and relay in the Engine Compartment (2010-2020)

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 2010-2016, 2018-2020: Not Used
2017: Interior rear vision camera module
13 2010-2016: Brake Switch
2017: Not Used
2018-2020: Interior rear vision camera module
14 Windshield Washer
16 Horn
17 Transmission
18 A/C
19 Engine control module battery
20 2018-2019: Cutaway/Left stoplamp/Turnlamp.
2020: Left stop/turn cutaway lamp
21 Left trailer stoplamp/Turnlamp
22 2018-2019: Cutaway/Right stoplamp/Turnlamp.
2020: Left stop/turn trailer 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/Glow Plug Module
31 Transmission control module/Ignition
32 Transmission control module 1 battery/Engine control module battery power (gas 6 cyl)
33 2017-2020: Rear parking aid module
34
35 2010-2017: Fuel Operated Heater Module
2018-2020: Not Used
36 Fuel System Control Module Battery
41 2018-2020: Transmission control 2 module battery power
42 Trailer wiring
43 2010-2016: Fan High
2017: EV fan clutch
2018-2020: Not Used
44 Starter solenoid
45 Engine control module/Powertrain
46 2010-2016: Fuel System Control Module Battery
2017: Not Used
2018-2020: 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 2010-2017: Not Used
2018-2020: Engine oil solenoid
62 O2 sensor 2 / EV fan (diesel)
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 2010-2016: Not Used
2017: Trailer stoplamps
2018-2020: External power for trailer
70 2018-2020: 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 / 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 2010-2016: Fan High
2017: EV fan clutch
2018-2020: Not Used
49 Powertrain
50 2010: Fan Clutch (EV)
2011-2020: Not Used
57 Cooling fan – low / Not Used
60 Fan Control / Not Used
Auxiliary Fuse Block (2018-2020)

This block is located near the fuse box in the engine compartment.

Fuses and relays Chevrolet Express (2003-2020)

Fuses Usage
MR-1 Upfitter 1
MR-2 Upfitter 2
MR-3 Upfitter power control
Relays:
MR Rel 1 Upfitter 1
MR Rel 2 Upfitter 1
Mega Fuse Holder (2018-2020) – Starter motor

Fuses and relays Chevrolet Express (2003-2020)

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