ECU CHEVROLET EXPRESS CARGO VAN 2012 1.G Workshop Manual

Black plate (1,1)Chevrolet Express Owner Manual - 2012
OnStar 14-1
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . . . 14-1
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . 14-2
Security . . . . . . . . . . . . . . . . . . . . . . 14-2
Navigation . . . . . . . . . . . . . . . . . . . 14-2
Connections . . . . . . . . . . . . . . . . . 14-4
Diagnostics . . . . . . . . . . . . . . . . . . 14-5
OnStar Additional Information
OnStar AdditionalInformation . . . . . . . . . . . . . . . . . 14-5
OnStar Overview
If equipped, this vehicle has a
comprehensive, in-vehicle system
that can connect to a live Advisor
for Emergency, Security, Navigation,
Connection, and Diagnostic
Services.
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.
Push
Qor call 1‐888‐4‐ONSTAR
(1‐888‐466‐7827) to speak to an
Advisor. Push
Xto:
.Make a call, end a call,
or answer an incoming call.
.Give OnStar Hands-Free Calling
voice commands.
.Give OnStar Turn-by-Turn
Navigation voice commands.
Requires the available Directions
and Connections service plan.
Push
Qto connect to a live
Advisor to:
.Verify account information or
update contact information.
.Get driving directions. Requires
the available Directions and
Connections service plan.
.Receive On-Demand
Diagnostics for a check on the
vehicle’s key operating systems.
.Receive Roadside Assistance.

Black plate (2,1)Chevrolet Express Owner Manual - 2012
14-2 OnStar
Push]to get a priority connection
to an Emergency Advisor available
24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or
respond to an AMBER Alert.
.Get crisis assistance and
evacuation routes.
OnStar Services
Emergency
With Automatic Crash Response,
the built-in system can automatically
connect to help in a crash even if
you cannot ask for it.
Push
]to connect to an
Emergency Advisor. GPS
technology is used to identify the
vehicle location and can provide
critical information to emergency
personnel. The Advisor is also
trained to offer critical assistance in
emergency situations.
Security
OnStar provides services like Stolen
Vehicle Assistance, Remote Ignition
Block, and Roadside Assistance,
if the vehicle is equipped with these
services. OnStar can unlock the
vehicle doors remotely, if it is
equipped with automatic door locks,
and can help police locate the
vehicle if it is stolen.
Navigation
OnStar navigation requires the
Directions and Connections
service plan.
Push
Qto receive directions or
have them sent to the vehicle
navigation screen. Destinations can
also be forwarded to the vehicle
from Google Maps™ or
MapQuest.com. The OnStar
mapping database is continuously
updated. Visit www.onstar.com for
coverage maps.
Turn‐by‐Turn Navigation
1. PushQto connect to a live
Advisor.
2. Request directions.
3. Directions are downloaded to the vehicle.
4. Follow the voice-guided commands.

Black plate (2,1)Chevrolet Express Owner Manual - 2012
i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-28Jump Starting . . . . . . . . . . . . . . . 10-86
Load Management . . . . . . . . . . . . . 6-7
Power Protection . . . . . . . . . . . . . . 6-8
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-34
Blade Replacement, Wiper . . . 10-34
Bluetooth . . . . . . . . . . . . . . . . . . . . . . 7-24
Brake System Warning Light . . . 5-23
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-26 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-33
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-27
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-34
System Messages . . . . . . . . . . . . 5-34
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Break-In, New Vehicle . . . . . . . . . 9-16
Bulb Replacement . . . . . . . . . . . . 10-40
Center High-MountedStoplamp (CHMSL) . . . . . . . 10-39
Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . 10-37
Halogen Bulbs . . . . . . . . . . . . . . 10-35 Bulb Replacement (cont'd)
Headlamps . . . . . . . . . . . . . . . . . 10-35
License Plate Lamps . . . . . . . 10-40
Taillamps . . . . . . . . . . . . . . . . . . . 10-38
Buying New Tires . . . . . . . . . . . . . 10-65
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-6
California Fuel Requirements . . . . . . . . . . . 9-41
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-2
Warning . . . . . . . . . . . . . . . . . . . . . . 10-2
Canadian Vehicle Owners . . . . . . . . iii
Capacities and Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 9-24
Winter Driving . . . . . . . . . . . . . . . . . 9-8
Cargo Door Relocking . . . . . . . . . . 2-7
Cautions, Danger, and
Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
CD Player . . . . . . . . . . . . . . . . . . . . . 7-13
Center High-Mounted Stoplamp (CHMSL) . . . . . . . . . 10-39
Chains, Tire . . . . . . . . . . . . . . . . . . 10-71 Charging System Light . . . . . . . . 5-20
Check
Engine Light . . . . . . . . . . . . . . . . . . 5-21
IgnitionTransmission Lock . . . . . . . . 10-33
Child Restraints Infants and Young
Children . . . . . . . . . . . . . . . . . . . . . 3-40
Lower Anchors and Tethers for Children . . . . . . . . . 3-46
Older Children . . . . . . . . . . . . . . . . 3-38
Securing . . . . . . . . . . 3-53, 3-55, 3-58
Systems . . . . . . . . . . . . . . . . . . . . . . 3-42
Cigarette Lighter . . . . . . . . . . . . . . . 5-10
Circuit Breakers . . . . . . . . . . . . . . 10-41
Cleaning Exterior Care . . . . . . . . . . . . . . . 10-93
Interior Care . . . . . . . . . . . . . . . . 10-97
Climate Control System Rear Heating System . . . . . . . . . . 8-5
Climate Control Systems . . . . . . . 8-1
Air Conditioning . . . . . . . . . . . . . . . 8-1
Heating . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Cluster, Instrument . . . . . . . . . . . . 5-12

Black plate (6,1)Chevrolet Express Owner Manual - 2012
i-6 INDEX
J
Jump Starting . . . . . . . . . . . . . . . . . 10-86
K
Key and Lock Messages . . . . . . . 5-38
Keyless EntryRemote (RKE) System . . . . . . . . 2-3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
L
Labeling, Tire Sidewall . . . . . . . . 10-50
Lamp Messages . . . . . . . . . . . . . . . 5-38
Lamps Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-2
License Plate . . . . . . . . . . . . . . . 10-40
Malfunction Indicator . . . . . . . . . 5-21
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-7
Taillamps . . . . . . . . . . . . . . . . . . . 10-38
Lap-Shoulder Belt . . . . . . . . . . . . . 3-11 LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . 3-52
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . 3-46
Light StabiliTrak
®OFF . . . . . . . . . . . . . 5-25
Lighter, Cigarette . . . . . . . . . . . . . . 5-10
Lighting Entry/Exit . . . . . . . . . . . . . . . . . . . . . . 6-7
Illumination Control . . . . . . . . . . . . 6-6
Lights Airbag On-Off . . . . . . . . . . . . . . . . . 5-18
Airbag Readiness . . . . . . . . . . . . . 5-18
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 5-24
Brake System Warning . . . . . . . 5-23
Charging System . . . . . . . . . . . . . 5-20
Cruise Control . . . . . . . . . . . . . . . . 5-28
Engine Oil Pressure . . . . . . . . . . 5-27
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
High-Beam On . . . . . . . . . . . . . . . . 5-28
High/Low Beam Changer . . . . . . 6-2
Safety Belt Reminders . . . . . . . . 5-17
Security . . . . . . . . . . . . . . . . . . . . . . 5-27 Lights (cont'd)
Tire Pressure . . . . . . . . . . . . . . . . . 5-26
Tow/Haul Mode . . . . . . . . . . . . . . . 5-25
Traction Control System
(TCS)/StabiliTrak
®. . . . . . . . . . 5-26
Locking Rear Axle . . . . . . . . . . . . . 9-37
Locks Automatic Door . . . . . . . . . . . . . . . . 2-8
Cargo Door Relocking . . . . . . . . . 2-7
Delayed Locking . . . . . . . . . . . . . . . 2-8
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Lockout Protection . . . . . . . . . . . . . 2-8
Power Door . . . . . . . . . . . . . . . . . . . . 2-7
Safety . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Loss of Control . . . . . . . . . . . . . . . . . 9-5
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . 3-46

Black plate (7,1)Chevrolet Express Owner Manual - 2012
INDEX i-7
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . .11-15
Maintenance Schedule Recommended Fluidsand Lubricants . . . . . . . . . . . . .11-12
Malfunction Indicator Lamp . . . . 5-21
Manual Mirrors . . . . . . . . . . . . . . . . 2-14
Manual Mode . . . . . . . . . . . . . . . . . . 9-31
Manual Windows . . . . . . . . . . . . . . 2-16
Messages
Airbag System . . . . . . . . . . . . . . . . 5-40
Anti-theft Alarm System . . . . . . . 5-40
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 5-34
Brake System . . . . . . . . . . . . . . . . 5-34
Compass . . . . . . . . . . . . . . . . . . . . . 5-34
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-35
Engine Cooling System . . . . . . . 5-36
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-37
Engine Power . . . . . . . . . . . . . . . . 5-37
Fuel System . . . . . . . . . . . . . . . . . . 5-38
Key and Lock . . . . . . . . . . . . . . . . . 5-38
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-38
Ride Control System . . . . . . . . . . 5-38
Service Vehicle . . . . . . . . . . . . . . . 5-40 Messages (cont'd)
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41
Transmission . . . . . . . . . . . . . . . . . 5-42
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-34
Vehicle Reminder . . . . . . . . . . . . . 5-42
Mirrors Convex . . . . . . . . . . . . . . . . . . . . . . . 2-14
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-15
Manual . . . . . . . . . . . . . . . . . . . . . . . 2-14
Manual Rearview . . . . . . . . . . . . . 2-15
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Trailer Tow . . . . . . . . . . . . . . . . . . . . 2-14
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . 10-58
N
Navigation
Vehicle Data Recordingand Privacy . . . . . . . . . . . . . . . 13-22
Navigation, OnStar
®. . . . . . . . . . . 14-2
New Vehicle Break-In . . . . . . . . . . 9-16
Noise Control System . . . . . . . . 10-31
O
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-13 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-7
Engine Oil Life System . . . . . 10-10
Engine Oil Pressure
Gauge . . . . . . . . . . . . . . . . . . . . . . 5-15
Messages . . . . . . . . . . . . . . . . . . . . 5-37
Pressure Light . . . . . . . . . . . . . . . . 5-27
Older Children, Restraints . . . . . 3-38
Online Owner Center . . . . . . . . . . 13-7
OnStar
®
Additional Information . . . . . . . . 14-5
Connections . . . . . . . . . . . . . . . . . . 14-4
Diagnostics . . . . . . . . . . . . . . . . . . . 14-5
Emergency . . . . . . . . . . . . . . . . . . . 14-2
Navigation . . . . . . . . . . . . . . . . . . . . 14-2
Overview . . . . . . . . . . . . . . . . . . . . . 14-1
Security . . . . . . . . . . . . . . . . . . . . . . 14-2
OnStar
®System . . . . . . . . . . . . . . . 1-22

Black plate (9,1)Chevrolet Express Owner Manual - 2012
INDEX i-9
Reimbursement Program,GM Mobility . . . . . . . . . . . . . . . . . . 13-8
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Remote Vehicle Start . . . . . . . . . . . 2-5
Replacement Bulbs . . . . . . . . . . . 10-40
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . 3-37
Maintenance . . . . . . . . . . . . . . . . .11-14
Replacing Airbag System . . . . . . 3-37
Replacing LATCH System Parts after a Crash . . . . . . . . . . . 3-52
Replacing Safety Belt System Parts after a Crash . . . 3-17
Reporting Safety Defects Canadian Government . . . . . . 13-19
General Motors . . . . . . . . . . . . . 13-20
U.S. Government . . . . . . . . . . . 13-19
Restraints Where to Put . . . . . . . . . . . . . . . . . 3-45
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . 9-21
Ride Control Systems Messages . . . . . . . . . . . . . . . . . . . . 5-38 Roads
Driving, Wet . . . . . . . . . . . . . . . . . . . 9-6
Roadside Assistance Program . . . . . . . . . . . . . . . 13-8, 13-10
Rotation, Tires . . . . . . . . . . . . . . . . 10-62
Routing, Engine Drive Belt . . . . . 12-5
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . 9-24
S
Safety Belts . . . . . . . . . . . . . . . . . . . . 3-8Care . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Extender . . . . . . . . . . . . . . . . . . . . . . 3-16
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . 3-10
Lap-Shoulder Belt . . . . . . . . . . . . 3-11
Reminders . . . . . . . . . . . . . . . . . . . . 5-17
Replacing after a Crash . . . . . . 3-17
Use During Pregnancy . . . . . . . . 3-16
Safety Defects Reporting Canadian Government . . . . . . 13-19
General Motors . . . . . . . . . . . . . 13-20
U.S. Government . . . . . . . . . . . 13-19
Safety Locks . . . . . . . . . . . . . . . . . . . . 2-8 Safety System Check . . . . . . . . . . 3-16
Satellite Radio . . . . . . . . . . . . . . . . . 7-10
Scheduling Appointments . . . . . 13-13
Seats
Adjustment, Front . . . . . . . . . . . . . . 3-2
Head Restraints . . . . . . . . . . . . . . . 3-2
Power Adjustment, Front . . . . . . 3-3
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Reclining Seatbacks . . . . . . . . . . . 3-3
Secondary Latch System . . . . . 10-83
Securing Child Restraints . . . . . . . . 3-53, 3-55, 3-58
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 2-12
Security, OnStar
®. . . . . . . . . . . . . . 14-2
Service Accessories andModifications . . . . . . . . . . . . . . . . 10-3
Doing Your Own Work . . . . . . . . 10-4
Engine Soon Light . . . . . . . . . . . . 5-21
Maintenance Records . . . . . . .11-15
Maintenance, General Information . . . . . . . . . . . . . . . . . . 11-1
Parts Identification Label . . . . . 12-1

Black plate (11,1)Chevrolet Express Owner Manual - 2012
INDEX i-11
Tires (cont'd)Rotation . . . . . . . . . . . . . . . . . . . . 10-62
Secondary Latch System . . . 10-83
Sidewall Labeling . . . . . . . . . . . 10-50
Terminology and
Definitions . . . . . . . . . . . . . . . . . 10-54
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . 10-68
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . 10-69
Wheel Replacement . . . . . . . . 10-70
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . 10-64
Tow/Haul Mode . . . . . . . . . . . . . . . . 9-32
Tow/Haul Mode Light . . . . . . . . . . 5-25
Towing
Driving Characteristics . . . . . . . . 9-46
Equipment . . . . . . . . . . . . . . . . . . . . 9-55
General Information . . . . . . . . . . 9-46
Recreational Vehicle . . . . . . . . 10-90
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 9-50
Vehicle . . . . . . . . . . . . . . . . . . . . . 10-90 Traction
Control System (TCS)/
StabiliTrak
®Light . . . . . . . . . . . . 5-26
Trailer Tow Mirrors . . . . . . . . . . . . . . . . . . . 2-14
Trailer Towing . . . . . . . . . . . . . . . . . 9-50
Transmission Automatic . . . . . . . . . . . . . . . 9-25, 9-28
Fluid, Automatic . . . . . 10-11, 10-13
Messages . . . . . . . . . . . . . . . . . . . . 5-42
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . 13-14
Trip Odometer . . . . . . . . . . . . . . . . . 5-13
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 6-5
U
Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 10-68
Using This Manual . . . . . . . . . . . . . . . . iv
V
Vehicle Canadian Owners . . . . . . . . . . . . . . . iii
Control . . . . . . . . . . . . . . . . . . . . . . . . 9-3
IdentificationNumber (VIN) . . . . . . . . . . . . . . . 12-1
Load Limits . . . . . . . . . . . . . . . . . . . 9-11
Messages . . . . . . . . . . . . . . . . . . . . 5-34
Personalization . . . . . . . . . . . . . . . 5-42
Reminder Messages . . . . . . . . . . 5-42
Remote Start . . . . . . . . . . . . . . . . . . 2-5
Security . . . . . . . . . . . . . . . . . . . . . . 2-12
Towing . . . . . . . . . . . . . . . . . . . . . . 10-90
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . 10-56
Vehicle Identification
Service Parts IdentificationLabel . . . . . . . . . . . . . . . . . . . . . . . . 12-1
Ventilation, Air . . . . . . . . . . . . . . . . . . 8-8
Visors . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Voltmeter Gauge . . . . . . . . . . . . . . 5-16