fuse CHEVROLET EXPRESS 2023 User Guide

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
Vehicle Care 197
4. Reverse Steps 1 and 2 to reinstall thelicense plate bulb assembly.
Electrical System
Electrical System Overload
The vehicle has fuses to protect against an
electrical system overload.
When the current electrical load is too
heavy, the circuit breaker opens and closes,
protecting the circuit until the current load
returns to normal or the problem is fixed.
This greatly reduces the chance of circuit
overload and fire caused by electrical
problems.
Fuses protect the wires that provide the
power to the devices in your vehicle.
If there is a problem on the road and a fuse
needs to be replaced, the same amperage
fuse can be borrowed. Choose some feature
of the vehicle that is not needed to use and
replace it as soon as possible.
To check a fuse, look at the band inside the
fuse. If the band is broken or melted,
replace the fuse. Be sure to replace a bad
fuse with a fuse of the identical size and
rating.
Replacing a Blown Fuse
At the next opportunity, see your dealer to
replace the blown fuse.
Headlamp Wiring
An electrical overload may cause the lamps
to go on and off, or in some cases to
remain off. Have the headlamp wiring
checked right away if the lamps go on and
off or remain off.
Windshield Wipers
If the wiper motor overheats due to heavy
snow or ice, the windshield wipers will stop
until the motor cools and will then restart.
Although the circuit is protected from
electrical overload, overload due to heavy
snow or ice may cause wiper linkage
damage. Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an electrical
problem and not snow or ice, be sure to get
it fixed.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
198 Vehicle Care
Fuses and Circuit Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit breakers.
This greatly reduces the chance of damage
caused by electrical problems.
{Danger
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. You and others
could be seriously injured or killed.
{Warning
Installation or use of fuses that do not
meet GM’s original fuse specifications is
dangerous. The fuses could fail, and result
in a fire. You or others could be injured
or killed, and the vehicle could be
damaged.
See Accessories and Modifications 0173 and
General Information 0173.
To check or replace a blown fuse, see
Electrical System Overload 0197.
Engine Compartment Fuse Block
The fuse block is in the engine compartment
on the driver side of the vehicle.
Vehicles with Upfitter Content
See www.gmupfitter.com for upfitter
provisions and best practices.
Caution
Spilling liquid on any electrical
component on the vehicle may damage
it. Always keep the covers on any
electrical component.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
Vehicle Care 199
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
1 ABS Motor Fuses Usage
2 ABS Module Fuses Usage
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

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
200 Vehicle Care
FusesUsage
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 Fuses
Usage
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 Fuses
Usage
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

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
Vehicle Care 201
FusesUsage
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
Usage
15 Run/Crank
37 –
38 Fuel Pump
39 Crank
40 A/C Compressor 48 –
49 Powertrain 50 –
57 –
60 – Auxiliary Fuse Block
This component is near the fuse block in the
engine compartment
Fuses Usage
MR-1 Upfitter 1
MR-2 Upfitter 2
MR-3 Upfitter Power Control
Relays Usage
MR Rel 1 Upfitter 1
MR Rel 2 Upfitter 2

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
202 Vehicle Care
Floor Console Fuse Block
The floor console fuse block is under the driver seat.
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Mini-Fuses Usage
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 HVAC 2
F14 HVAC 1 F15 Reflected LED Display
F16 Upfitter Aux 1/Gas Ambulance

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
Vehicle Care 203
Mini-FusesUsage
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 Mini-Fuses
Usage
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 Usage
K1 Run
K2 –
K3 Parking Lamps
K4 Upfitter 2 K5 Rear Window Defogger
K6 Retained Accessory Power Circuit Breakers Usage
CB1 Power Seats
CB2 Power Windows
Wheels and Tires
Tires
Every new GM vehicle has high-quality
tires made by a leading tire
manufacturer. See the warranty manual
for information regarding the tire
warranty and where to get service. For
additional information refer to the tire
manufacturer.
{Warning
.Poorly maintained and improperly
used tires are dangerous.
.Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits 0126.
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
274 Index
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . .72
Collision Damage Repair . . . . . . . . . . . . . . . . . 258
CompartmentsStorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 269
Control Traction and Electronic Stability . . . . . . . 142
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . 122
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 74
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114, 116
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . .183
Courtesy Transportation Program . . . . . . . . 257
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . .143 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Customer Assistance Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Text Telephone (TTY) Users . . . . . . . . . . . . 255
Customer Information Publications Ordering Information . . . . . 260
Customer Satisfaction Procedure . . . . . . . . . 253 Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 258
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Dashboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Data Collection
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 262
Daytime Running Lamps (DRL) . . . . . . . . . . . . 92
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . . 121
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Devices Auxiliary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . . 271
Disabled Vehicle
Transporting . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . . 121
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Door Cargo Door Relocking . . . . . . . . . . . . . . . . . . . . 12
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 12
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Rear Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Sliding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Drive Belt Routing, Engine . . . . . . . . . . . . . . . 252
Driver
Assistance Systems . . . . . . . . . . . . . . . . . . . . 145
Information Center (DIC) . . . . . . . . . . . . . . . . 82
Driving Better Fuel Economy . . . . . . . . . . . . . . . . . . . . 121
Characteristics and Towing Tips . . . . . . . . 155
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Distracted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Hill and Mountain Roads . . . . . . . . . . . . . . 124
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 126
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 123
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 123
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 126
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
E
ElectricalEquipment, Add-On . . . . . . . . . . . . . . . . . . . . . 171
System Overload . . . . . . . . . . . . . . . . . . . . . . 197
Electrical System Engine Compartment Fuse Block . . . . . . . 198
Floor Console Fuse Block . . . . . . . . . . . . . . . 202
Fuses and Circuit Breakers . . . . . . . . . . . . . 198
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
Index 275
EngineAir Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 182
Check Light (Malfunction Indicator) . . . . . 77
Compartment Overview . . . . . . . . . . . . . . . . 176
Coolant Heater . . . . . . . . . . . . . . . . . . . . . . . . 133
Coolant Temperature Gauge . . . . . . . . . . . . 74
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 183
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 252
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . . 181
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . 73
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 81
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 86
Running While Parked . . . . . . . . . . . . . . . . . 136
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Enhanced Technology Glass . . . . . . . . . . . . . . . 20
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 167
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 262
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Extended Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . .18
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . 34
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Lamps Off Reminder . . . . . . . . . . . . . . . . . . . . 91
Lighting Battery Saver . . . . . . . . . . . . . . . . . . 96F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Fast Idle System . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Filter Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 182
Fixed Mast Antenna . . . . . . . . . . . . . . . . . . . . . 103
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 93
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Fluid Automatic Transmission . . . . . . . . . . . . . . . . 181
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . 188
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Forward Collision Alert (FCA) System . . . . . . . . . . . 148
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Front Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Fuel (cont'd)
Economy, Driving for Better . . . . . . . . . . . . 121
Filling a Portable Fuel Container . . . . . . . 154
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 153
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 153
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Low Fuel Warning Light . . . . . . . . . . . . . . . . 81
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 153
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 152
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 227
Fuses Engine Compartment Fuse Block . . . . . . . 198
Floor Console Fuse Block . . . . . . . . . . . . . . . 202
Fuses and Circuit Breakers . . . . . . . . . . . . . 198
G
GaugesEngine Coolant Temperature . . . . . . . . . . . . 74
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 73
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Warning Lights and Indicators . . . . . . . . . . . 71
General Information Service and Maintenance . . . . . . . . . . . . . . 241