
Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
Service and Maintenance 257
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
This maintenance section applies to vehicles with a gasoline engine. If the vehicle has a diesel engine, see the maintenance schedule section in
the Duramax diesel supplement.
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission (6-Speed Transmission) DEXRON-VI Automatic Transmission Fluid.
Automatic Transmission (8-Speed Transmission) DEXRON-HP Automatic Transmission Fluid.
Chassis Lubrication, Parking Brake Cable Guides Chassis lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling System
0 191.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil0184.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood Hinges Multi-Purpose Lubricant, Superlube. See your dealer. Power Steering System GM Power Steering Fluid. See your dealer. Rear Axle See your dealer.
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
278 OnStar
.Receive a Diagnostic check of the vehicle's
key operating systems.
.Receive Roadside Assistance.
.Manage Wi-Fi Settings, if equipped.
Press
>to get a priority connection to an
OnStar Advisor available 24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or respond to an
AMBER Alert.
.Get assistance in severe weather or other
crisis situations and find evacuation
routes.
OnStar Services
Emergency
Emergency Services require an active safety
and security plan. With Automatic Crash
Response, built-in sensors can automatically
alert a specially trained OnStar Advisor who
is immediately connected in to the vehicle
to help.
Press
>for a priority connection to an
OnStar Advisor who can contact emergency
service providers, direct them to your exact
location, and relay important information. With OnStar Crisis Assist, specially trained
Advisors are available 24 hours a day, 7 days
a week, to provide a central point of
contact, assistance, and information during a
crisis.
With Roadside Assistance, Advisors can
locate a nearby service provider to help with
a flat tire, a battery jump, or an empty
gas tank.
Security
If equipped, OnStar provides these services:
.With Stolen Vehicle Assistance, OnStar
Advisors can use GPS to pinpoint the
vehicle and help authorities quickly
recover it.
.With Remote Ignition Block, if equipped,
OnStar can block the engine from being
restarted.
.With Stolen Vehicle Slowdown,
if equipped, OnStar can work with law
enforcement to gradually slow the
vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked and the
vehicle alarm sounds, a notification by text,
e-mail, or phone call will be sent. If the
vehicle is stolen, an OnStar Advisor can work
with authorities to recover the vehicle.
OnStar Additional
Information
In-Vehicle Audio Messages
Audio messages may play important
information at the following times:
.Prior to vehicle purchase. PressQto set
up an account.
.After change in ownership and at
90 days.
Transferring Service
PressQto request account transfer
eligibility information. The Advisor can
cancel or change account information.
Selling/Transferring the Vehicle
Call 1-888-4ONSTAR (1-888-466-7827)
immediately to terminate your OnStar or
connected services if the vehicle is disposed
of, sold, transferred, or if the lease ends.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
284 Connected Services
.Request Roadside Assistance.
.Set a parking reminder with pin drop,
take a photo, make a note, and set a
timer.
.Connect with Chevrolet on social media.
Features are subject to change. For
myChevrolet mobile app information and
compatibility, see my.chevrolet.com.
An active OnStar or connected service plan
may be required. A compatible device,
factory-installed remote start, and power
locks are required. Data rates apply. See
www.onstar.com for details and system
limitations.
Remote Services
Contact an OnStar Advisor to unlock the
doors or sound the horn and flash the
lamps.
Marketplace
OnStar Advisors can provide offers from
restaurants and retailers on your route, help
locate hotels, or book a room. These services
vary by market.
Diagnostics
By monitoring and reporting on the vehicle's
key systems, OnStar Advanced Diagnostics,
if equipped, provides a way to keep up on
maintenance. Capabilities vary by model.
See www.onstar.com for details and system
limitations. Features are subject to change.
For updates on feature capabilities, see
my.chevrolet.com. Message and data rates
may apply.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
Index 289
General Information (cont'd)Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Glass, Enhanced Technology . . . . . . . . . . . . . . . 21
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 92
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 202
Daytime Running Lamps (DRL) . . . . . . . . . . 91
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
High-Beam On Light . . . . . . . . . . . . . . . . . . . . 81
High/Low Beam Changer . . . . . . . . . . . . . . . 91
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Heater Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . 139
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . 119, 121, 122
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . . .81
Hill and Mountain Roads . . . . . . . . . . . . . . . . 130
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . .147
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 How to Wear Seat Belts Properly . . . . . . . . . 29
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119, 121, 122
I
Idle System
Fast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . . 135
Ignition Transmission Lock Check . . . . . . . . 201
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Indicator
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Infants and Young Children, Restraints . . . . 47
Information
Publication Ordering . . . . . . . . . . . . . . . . . . . 273
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Infotainment System . . . . . . . . . . . . . . . . . . . . 276
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . . . . . 71
Instrument Panel Overview . . . . . . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . .19
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
J
Jump Starting - North America . . . . . . . . . . . 237
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . . . . . . 8
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . . . . . . . . 213
Lamps
Daytime Running (DRL) . . . . . . . . . . . . . . . . . 91
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Exterior Controls . . . . . . . . . . . . . . . . . . . . . . . . 90
Exterior Lamps Off Reminder . . . . . . . . . . . 90
Exterior Lighting Battery Saver . . . . . . . . . 95
License Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Malfunction Indicator (CheckEngine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Taillamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Lamps, Bulb Replacement . . . . . . . . . . . . . . . . 202
Lane Departure Warning (LDW) . . . . . . . . . . . 157
Lane Departure Warning Light . . . . . . . . . . . . 79
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . . 31
LATCH System Replacing Parts after a Crash . . . . . . . . . . . 58
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Lighter, Cigarette . . . . . . . . . . . . . . . . . . . . . . . . . 70
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Illumination Control . . . . . . . . . . . . . . . . . . . . 93
Lights Airbag On-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
292 Index
Remote Keyless Entry (RKE) System . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . . . 10
Replacement PartsAirbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Replacing Airbag System . . . . . . . . . . . . . . . . . . 45
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Reporting Safety Defects
Canadian Government . . . . . . . . . . . . . . . . . 274
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 274
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 273
Restraints Where to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Retained Accessory Power (RAP) . . . . . . . . . .138
Roads Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Roadside Assistance Program . . . . . . . . . . . . 268
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Routing, Engine Drive Belt . . . . . . . . . . . . . . . 264
Running the Vehicle While Parked . . . . . . . .142S
Safety Defects Reporting Canadian Government . . . . . . . . . . . . . . . . . 274
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 274
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 273
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Safety System Check . . . . . . . . . . . . . . . . . . . . . .35
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Scheduling Appointments . . . . . . . . . . . . . . . . 270
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
How to Wear Seat Belts Properly . . . . . . . 29
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . 31
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Replacing after a Crash . . . . . . . . . . . . . . . . . 36
Use During Pregnancy . . . . . . . . . . . . . . . . . . 35
Seats Adjustment, Front . . . . . . . . . . . . . . . . . . . . . . 22
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power Adjustment, Front . . . . . . . . . . . . . . . 23
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 23
Securing Child Restraints . . . . . . . . . . . . . . 58, 60 Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 Accessories and Modifications . . . . . . . . . 178
Climate Control System . . . . . . . . . . . . . . . . . 119
Doing Your Own Work . . . . . . . . . . . . . . . . . 179
Maintenance Records . . . . . . . . . . . . . . . . . . 259
Maintenance, General Information . . . . . 250
Parts Identification . . . . . . . . . . . . . . . . . . . . . 260
Scheduling Appointments . . . . . . . . . . . . . . 270
Services Special Application . . . . . . . . . . . . . . . . . . . . . 255
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . 44
Shift Lock Control Function Check,
Automatic Transmission . . . . . . . . . . . . . . . . 201
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . 155
Side Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Sidemarker Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 202