Chevrolet Express (2018) Fuse Box Diagram

avatarJonathan Yarden
Year of production: 2018

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Engine Compartment Fuse Block

The fuse block is located in the engine compartment on the driver side of the vehicle.

Chevrolet Express - fuse box - engine compartment

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.

Chevrolet Express - fuse box - auxiliary block

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

Chevrolet Express - fuse box - mega fuse holder

Fuses Usage
1 Starter motor

Floor Console Fuse Block

The floor console fuse block is located under the driver seat.

Chevrolet Express - fuse box - floor console fuse block

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.

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