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Chevrolet Express 2021 Fuse Box

Chevrolet Express 2021 Fuse Box Info

 

Passenger compartment fuse box location:

The floor console fuse box is located under the driver’s seat.

 

Engine compartment fuse box location:

 

 

Fuse Box Diagram | Layout

 

Passenger compartment fuse box:

Fuse/Relay N° Functions
Fuses  
1 -
2 Steering wheel sensor
3 Auxiliary parking lamps
4 Front parking lamps
5 Trailer parking lamps
6 Upfitter/Parking lamps
7 Right rear parking lamp
8 Left rear parking lamp
9 Exterior rear mirror switch/ Door lock-unlock control upfitter/Front camera module
10 Airbag/Automatic occupant sensing
11 – / OnStar
12 -
13 HVAC 2
14 HVAC 1
15 Reflected LED display
16 Upfitter aux 1/Gas ambulance
17 Heated outside mirrors
18 Rear window defogger
19 Compass
20 Radio/Chime/ SiriusXM satellite radio
21 Remote function actuator/Tire pressure monitor
22 Ignition switch/ Discrete logic ignition sensor
23 Instrument cluster
24 -
25 HVAC control
26 Auxiliary/Trailer reverse lamps
27 Reverse tail lamps
28 Upfitter 2/Reading lamps/Ambulance
29 Rear blower
30 Upfitter/Courtesy lamps
31 Front door lock
32 Rear door lock
33 Cargo door unlock
34 Front passenger door unlock
35 Rear passenger door unlock
36 Driver door lock
37 -
38 -
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 box:

Fuse/Relay N° Functions
Fuses  
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 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/ Crankcase vent heater (Diesel only)
62 O2 sensor 2
63 -
64 Mass air flow/ 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/Flex fuel sensor
72 Body control module 6
73 Lighter/Data link connector
74 Front blower
75 Engine control module diesel
76 Soot sensors (Diesel only)
77 O2 sensor 1
78 Engine control module, powertrain signal 1
79 Ignition/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 -

 

Auxiliary fuse box:

Fuse/Relay N° Functions
Fuses  
MR-1 Upfitter 1
MR-2 Upfitter 2
MR-3 Upfitter power control
Relays  
MR Rel 1 Upfitter 1
MR Rel 2 Upfitter 2

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