ad blue CHEVROLET EXPRESS 2023 User Guide

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
Driving and Operating 169
1. Ground
2. Left Turn/Brake
3. Reverse Lamps
4. Taillamps
5. Battery Feed
6. Right Turn/Brake
7. Electric Brakes
Electric Brake Control Wiring Provisions
If the vehicle is not equipped with an
integrated trailer brake controller, and the
trailer has electric brakes, a trailer brake
controller needs to be installed on the
vehicle. The brake controller should be
installed by your dealer or a qualified
service center.If equipped, wiring provisions for an
aftermarket electric trailer brake controller
are included with the vehicle as part of the
trailer wiring package. The harness contains
the following circuits:
.Dark Blue: Electric Trailer Brakes
.Red/White: Battery Feed
.Lt Blue/White: Brake Apply Signal
.Black: Ground
There are four blunt cut wires under the
floor carpeting in front of the brake pedal.
It will be necessary to have a technician
connect the 12-volt power to the engine
compartment fuse block.
Refer to the aftermarket electric trailer brake
controller owner's manual to determine wire
color coding of the electric trailer brake
controller. The wire colors on the brake
controller may be different from the vehicle.
Trailer Lamps
Always check all trailer lamps are working at
the beginning of each trip, and periodically
on longer trips.
Turn Signals When Towing a Trailer
When properly connected, the trailer turn
signals will illuminate to indicate the vehicle
is turning, changing lanes, or stopping.
When towing a trailer, the arrows on the
instrument cluster will illuminate even if the
trailer is not properly connected or the bulbs
are burned out.
Tow/Haul Mode
Tow/Haul assists when pulling a heavy
trailer or a large or heavy load. For
instructions on how to enter Tow/Haul
mode, see Tow/Haul Mode 0140.
Tow/Haul Mode is designed to be most
effective when the vehicle and trailer
combined weight is at least 75% of the
vehicle's Gross Combined Weight Rating
(GCWR). See “Trailer Weight” underTrailer
Towing 0159.
Tow/Haul Mode is most useful when towing
a heavy trailer or carrying a large or
heavy load:
.Through rolling terrain
.In stop-and-go traffic
.In busy parking lots

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
262 Customer Information
Customer Care Centre
General Motors of Canada Company
500 Wentworth Street W
Oshawa, ON L1J 0C5
In Mexico, call 800-466-0811 or
800-508-0000.
In other Central America and Caribbean
Countries, call 52-555-901-2369.
Vehicle Data Recording and
Privacy
The vehicle has a number of computers that
record information about the vehicle’s
performance and how it is driven or used.
For example, the vehicle uses computer
modules to monitor and control engine and
transmission performance, to monitor the
conditions for airbag deployment and
deploy them in a crash, and, if equipped, to
provide antilock braking to help the driver
control the vehicle. These modules may
store data to help the dealer technician
service the vehicle or to help GM improve
safety or features. Some modules may also
store data about how the vehicle is
operated, such as rate of fuel consumptionor average speed. These modules may retain
personal preferences, such as radio presets,
seat positions, and temperature settings.
Cybersecurity
GM collects information about the use of
your vehicle including operational and safety
related information. We collect this
information to provide, evaluate, improve,
and troubleshoot our products and services
and to develop new products and services.
The protection of vehicle electronics systems
and customer data from unauthorized
outside electronic access or control is
important to GM. GM maintains appropriate
security standards, practices, guidelines and
controls aimed at defending the vehicle and
the vehicle service ecosystem against
unauthorized electronic access, detecting
possible malicious activity in related
networks, and responding to suspected
cybersecurity incidents in a timely,
coordinated and effective manner. Security
incidents could impact your safety or
compromise your private data. To minimize
security risks, please do not connect your
vehicle electronic systems to unauthorized
devices or connect your vehicle to any
unknown or untrusted networks (such as
Bluetooth, WIFI or similar technology). Inthe event you suspect any security incident
impacting your data or the safe operation of
your vehicle, please stop operating your
vehicle and contact your dealer.Event Data Recorders
This vehicle is equipped with an Event Data
Recorder (EDR). The main purpose of an EDR
is to record, in certain crash or near
crash-like situations, such as an air bag
deployment or hitting a road obstacle, data
that will assist in understanding how a
vehicle’s systems performed. The EDR is
designed to record data related to vehicle
dynamics and safety systems for a short
period of time, typically 30 seconds or less.
The EDR in this vehicle is designed to record
such data as:
.How various systems in your vehicle were
operating;
.Whether or not the driver and passenger
safety belts were buckled/fastened;
.How far (if at all) the driver was
depressing the accelerator and/or brake
pedal; and,
.How fast the vehicle was traveling.
These data can help provide a better
understanding of the circumstances in which
crashes and injuries occur.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
264 OnStar
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . . . . . . . . . . . . . 264
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
OnStar Additional Information
OnStar Additional Information . . . . . . . . 266
OnStar Overview
=Voice Command Button
QBlue OnStar Button
>Red Emergency Button
This vehicle may be equipped with a
comprehensive, in-vehicle system that can
connect to an OnStar Advisor for Emergency,
Security, Navigation, Connections, and
Diagnostics Services. OnStar services may
require a paid service plan and data plan.
OnStar requires the vehicle battery and
electrical system, cellular service, and GPS
satellite signals to be available and
operating. OnStar acts as a link to existing
emergency service providers. OnStar may
collect information about you and your
vehicle, including location information. See
OnStar User Terms, Privacy Statement, and
Software Terms for more details including
system limitations at www.onstar.com (U.S.)
or www.onstar.ca (Canada). The OnStar system status light is next to
the OnStar buttons. If the status light is:
.Solid Green: System is ready.
.Flashing Green: On a call.
.Red: Indicates a problem.
.Off: System is off. PressQtwice to
speak with an OnStar Advisor.
Press
Qor call 1-888-4ONSTAR
(1-888-466-7827) to speak to an Advisor.
Functionality of the Voice Command button
may vary by vehicle and region.
Press
=to:
.Open the OnStar app on the infotainment
display. If equipped, the infotainment
system has OnStar controls in the
embedded OnStar app on the Home Page.
Most OnStar functions that can be
performed with the buttons can be done
using the app. To open the app, touch the
OnStar icon on the Home Page. App
updates require a corresponding service
plan. Features vary by region and model.
Features are subject to change. For more
information, see my.chevrolet.com/learn
or press
Q.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
Index 273
Automatic (cont'd)Transmission Shift Lock Control
Function Check . . . . . . . . . . . . . . . . . . . . . . . 193
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 139
Auxiliary Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Avoiding Untrusted Media Devices . . . . . . . 103
Axle Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
B
BatteryExterior Lighting Battery Saver . . . . . . . . . 96
Load Management . . . . . . . . . . . . . . . . . . . . . . 95
Power Protection . . . . . . . . . . . . . . . . . . . . . . . 96
Battery - North America . . . . . . . . . . . . . 191, 228
Blade Replacement, Wiper . . . . . . . . . . . . . . . 193
Bluetooth
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
System Warning Light . . . . . . . . . . . . . . . . . . 78
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 129
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . 194
Center High-Mounted Stoplamp(CHMSL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . . . . . . . . . . . . . . . . . . 194
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 194
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 194
License Plate Lamps . . . . . . . . . . . . . . . . . . . 196
Taillamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . . 215C
Calibration
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
California Perchlorate Materials Requirements . . . . 173
California Proposition 65 Warning . . . . . 1, 228
Camera Rear Vision (RVC) . . . . . . . . . . . . . . . . . . . . . . 146
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . .2
Capacities and Specifications . . . . . . . . . . . . . 250
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 136
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 125
Cargo
Door Relocking . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218
Charging
System Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Check Ignition Transmission Lock . . . . . . . . . . . . . 193
Check Engine Light (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Child Restraints Infants and Young Children . . . . . . . . . . . . . 46
Lower Anchors and Tethers for
Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58, 60
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Child Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Climate Control Systems . . . . . . . . . . . . . . . . . . 114 Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . 114
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Rear Heating System . . . . . . . . . . . . . . . . . . . 116
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
278 Index
OilEngine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Engine Oil Life System . . . . . . . . . . . . . . . . . . 181
Engine Oil Pressure Gauge . . . . . . . . . . . . . . 73
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Older Children, Restraints . . . . . . . . . . . . . . . . . 45
Online Account . . . . . . . . . . . . . . . . . . . . . . . . . . 255
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263 Additional Information . . . . . . . . . . . . . . . . . 266
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . 265
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Operation
Infotainment System . . . . . . . . . . . . . . . . . . . 99
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . 186
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . 4
P
ParkAssist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Shifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 135
Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Parking (cont'd)
Brake and P (Park) Mechanism
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Over Things That Burn . . . . . . . . . . . . . . . . . 136
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Phone Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Protection, Battery . . . . . . . . . . . . . . . . . . . . . . 96
Retained Accessory (RAP) . . . . . . . . . . . . . . 133
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 23
Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . .33
Privacy Vehicle Data Recording . . . . . . . . . . . . . . . . 262
Program Courtesy Transportation . . . . . . . . . . . . . . . 257
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Proposition 65 Warning California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Proposition 65 Warning, California . . . . . . . 228 Publication Ordering Information . . . . . . . . 260
R
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183
Radio
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Frequency Statement . . . . . . . . . . . . . . . . . . 260
Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Climate Control System . . . . . . . . . . . . . . . . . 116
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Heating System . . . . . . . . . . . . . . . . . . . . . . . . 116
Locking Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Vision Camera (RVC) . . . . . . . . . . . . . . . . . . . 146
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . .19
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . .23
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Recommended Fluids and Lubricants . . . . . 246
Records Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Recreational Vehicle Towing . . . . . . . . . . . . . 232