2007 CHEVROLET EXPRESS check engine

Owner Checks and Services
Starter Switch Check
{WARNING:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 3-36.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The vehicle
should start only in P (Park) or N (Neutral). If the
vehicle starts in any other position, contact
your dealer/retailer for service.
Automatic Transmission Shift Lock
Control System Check
{WARNING:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room around the vehicle. It should be parked on a
level surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 3-36.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the ignition to ON/RUN,
but do not start the engine. Without applying the
regular brake, try to move the shift lever out
of P (Park) with normal effort. If the shift lever
moves out of P (Park), contact your dealer/retailer
for service.
7-10

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK/OFF in each shift lever position.
•The ignition should turn to LOCK/OFF only
when the shift lever is in P (Park).
•The ignition key should come out only in
LOCK/OFF.
Contact your dealer/retailer if service is required.
Parking Brake and Automatic
Transmission P (Park) Mechanism
Check
{WARNING:
When you are doing this check, the vehicle could
begin to move. You or others could be injured and
property could be damaged. Make sure there is
room in front of the vehicle in case it begins to roll.
Be ready to apply the regular brake at once
should the vehicle begin to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake,
set the parking brake.
•To check the parking brake’s holding ability:
With the engine running and the transmission
in N (Neutral), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle
is held by the parking brake only.
•To check the P (Park) mechanism’s holding
ability: With the engine running, shift to P (Park).
Then release the parking brake followed by
the regular brake.
Contact your dealer/retailer if service is required.
7-11

Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle suspension,
brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletins give additional technical service
information needed to knowledgeably service
General Motors cars and trucks. Each bulletin
contains instructions to assist in the diagnosis
and service of your vehicle.
Owner Information
Owner publications are written specifically for owners
and intended to provide basic operational information
about the vehicle. The owner manual includes the
Maintenance Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner Manual, and
Warranty Booklet.
RETAIL SELL PRICE: $35.00 (U.S.) plus processing fee
Without Portfolio: Owner Manual only.
RETAIL SELL PRICE: $25.00 (U.S.) plus processing fee
Current and Past Model Order Forms
Technical Service Bulletins and Manuals are available
for current and past model GM vehicles. To request
an order form, specify year and model name of
the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc.
on the World Wide Web at: helminc.com
Or you can write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and without
incurring obligation. Allow ample time for delivery.
Note to Canadian Customers: All listed prices are
quoted in U.S. funds. Canadian residents are to make
checks payable in U.S. funds.
8-17

A
Accessories and Modifications............................ 6-3
Accessory Power............................................3-23
Accessory Power Outlets.................................4-14
Additives, Fuel................................................. 6-7
Add-On Electrical Equipment...........................6-109
Air Cleaner/Filter, Engine.................................6-20
Air Conditioning..............................................4-15
Airbag
Adding Equipment to Your Airbag-Equipped
Vehicle...................................................2-79
Airbag System
Airbag Off Switch........................................2-70
How Does an Airbag Restrain?......................2-67
Passenger Sensing System...........................2-73
Servicing Your Airbag-Equipped Vehicle..........2-78
What Makes an Airbag Inflate?......................2-67
What Will You See After an Airbag Inflates?....2-68
When Should an Airbag Inflate?....................2-65
Where Are the Airbags?...............................2-63
Airbags
Off Light.....................................................4-24
Passenger Status Indicator...........................4-25
Readiness Light..........................................4-23
System Check.............................................2-60
All-Wheel Drive...............................................6-49
All-Wheel-Drive (AWD) System........................... 5-8Antenna
Fixed Mast.................................................4-78
Antilock Brake System (ABS)............................. 5-4
Warning Light.............................................4-28
Appearance Care
Aluminum Wheels......................................6-107
Care of Safety Belts...................................6-104
Chemical Paint Spotting..............................6-108
Cleaning Exterior Lamps/Lenses..................6-105
Fabric/Carpet............................................6-103
Finish Care...............................................6-106
Finish Damage..........................................6-108
Instrument Panel, Vinyl, and Other Plastic
Surfaces...............................................
6-104
Interior Cleaning........................................6-102
Sheet Metal Damage..................................6-107
Tires........................................................6-107
Underbody Maintenance.............................6-108
Washing Your Vehicle.................................6-105
Weatherstrips............................................6-105
Windshield and Wiper Blades......................6-106
Ashtray.........................................................4-15
Assistance Program, Roadside........................... 8-8
Audio System.................................................4-59
Audio Steering Wheel Controls......................4-77
Radio Reception..........................................4-78
Setting the Clock.........................................4-60
Theft-Deterrent Feature................................4-77
1

Audio System(s).............................................4-62
Automatic Door Lock.......................................3-11
Automatic Door Unlock....................................3-11
Automatic Headlamp System............................4-11
Automatic Transmission
Fluid..................................................6-21, 6-24
Operation...........................................3-27, 3-32
Axle, Rear.....................................................6-50
B
Battery..........................................................6-43
Electric Power Management..........................4-13
Run-Down Protection...................................4-14
Belt Routing, Engine.......................................7-15
Brake
Emergencies................................................ 5-5
Brakes..........................................................6-40
Antilock....................................................... 5-4
Parking......................................................3-36
System Warning Light..................................4-27
Braking........................................................... 5-3
Braking in Emergencies..................................... 5-5
Break-In, New Vehicle.....................................3-22
Bulb Replacement...........................................6-58
Center High-Mounted Stoplamp (CHMSL)........6-56
Front Turn Signal, Sidemarker and Parking
Lamps ....................................................6-55
Halogen Bulbs............................................6-53Bulb Replacement (cont.)
Headlamps.................................................6-53
License Plate Lamps....................................6-58
Taillamps....................................................6-56
Buying New Tires...........................................6-79
C
Calibration.....................................................4-42
California
Perchlorate Materials Requirements................. 6-4
Warning....................................................... 6-4
California Fuel.................................................. 6-6
Canadian Owners............................................... iii
Capacities and Specifications..........................6-116
Carbon Monoxide
Engine Exhaust...........................................3-40
Winter Driving.............................................5-16
Care of
Safety Belts..............................................6-104
Cargo Door Relocking.....................................3-10
CD, MP3 .......................................................4-72
Center High-Mounted Stoplamp (CHMSL)...........6-56
Chains, Tire...................................................6-84
Charging System Light....................................4-26
Check
Engine Lamp..............................................4-30
Checking Things Under the Hood......................6-12
Chemical Paint Spotting.................................6-108
2

Dome Lamps .................................................4-12
Door
60/40 Swing-Out Side Door...........................3-13
Automatic Door Lock....................................3-11
Automatic Door Unlock.................................3-11
Cargo Door Relocking..................................3-10
Delayed Locking..........................................3-10
Locks.......................................................... 3-9
Power Locks...............................................3-10
Programmable Automatic Door Locks.............3-10
Rear Door Security Locks.............................3-11
Rear Doors.................................................3-15
Sliding Side Door........................................3-12
Drive Systems
All-Wheel Drive...........................................6-49
Driver Information Center (DIC).........................4-36
DIC Operation and Displays..........................4-37
DIC Vehicle Customization............................4-52
DIC Warnings and Messages........................4-44
Driving
At Night.....................................................5-12
Before a Long Trip......................................5-14
Defensive..................................................... 5-2
Drunk.......................................................... 5-2
Highway Hypnosis.......................................5-14
Hill and Mountain Roads..............................5-15
In Rain and on Wet Roads...........................5-13
Loss of Control...........................................5-10Driving (cont.)
Off-Road Recovery......................................5-10
Rocking Your Vehicle to Get it Out.................5-19
Winter........................................................5-16
Driving for Better Fuel Economy.......................1-18
Dual Tire Operation.........................................6-70
E
E85 Fuel......................................................... 6-8
EDR .............................................................8-18
Electrical Equipment, Add-On..........................6-109
Electrical System
Engine Compartment Fuse Block.................6-112
Floor Console Fuse Block...........................6-111
Fuses and Circuit Breakers.........................6-110
Headlamp Wiring.......................................6-110
Windshield Wiper Fuses.............................6-110
Electronic Immobilizer
PASS-Key
®III+...........................................3-20
Electronic Immobilizer Operation
PASS-Key
®III+...........................................3-20
Engine
Air Cleaner/Filter.........................................6-20
Check and Service Engine Soon Lamp...........4-30
Compartment Overview................................6-14
Coolant......................................................6-29
4

G
Gages
Engine Coolant Temperature.........................4-29
Fuel..........................................................4-35
Oil Pressure...............................................4-33
Speedometer..............................................4-22
Trip Odometer.............................................4-22
Voltmeter Gage...........................................4-27
Gasoline
Octane........................................................ 6-6
Specifications............................................... 6-6
Glass, Enhanced Technology............................3-19
GM Mobility Reimbursement Program.................. 8-7
H
Halogen Bulbs................................................6-53
Hazard Warning Flashers................................... 4-3
Head Restraints............................................... 2-2
Headlamp Wiring...........................................6-110
Headlamps....................................................6-53
Bulb Replacement.......................................6-53
Daytime Running Lamps (DRL).....................4-10
Exterior Lamps............................................. 4-9
Flash-to-Pass............................................... 4-5Headlamps (cont.)
Front Turn Signal, Sidemarker and Parking
Lamps ....................................................6-55
High/Low Beam Changer................................ 4-5
On Reminder..............................................4-10
Heater...........................................................4-15
Engine Coolant...........................................3-25
Highbeam On Light.........................................4-35
Highway Hypnosis...........................................5-14
Hill and Mountain Roads..................................5-15
Hood
Checking Things Under................................6-12
Release.....................................................6-13
Horn ............................................................... 4-3
How to Wear Safety Belts Properly...................2-15I
Ignition Positions.............................................3-22
Infants and Young Children, Restraints...............2-33
Inflation - Tire Pressure...................................6-68
Instrument Panel
Brightness..................................................4-11
Cluster.......................................................4-21
Introduction...................................................... 7-2
6

Locks (cont.)
Lockout Protection.......................................3-12
Power Door ................................................3-10
Programmable Automatic Door Locks.............3-10
Rear Door Security Locks.............................3-11
Loss of Control...............................................5-10
Lower Anchors and Tethers for Children.............2-42
M
Maintenance Schedule
Maintenance Record....................................7-16
Maintenance Replacement Parts....................7-14
Owner Checks and Services.........................7-10
Recommended Fluids and Lubricants.............7-12
Scheduled Maintenance................................. 7-3
Malfunction Indicator Lamp...............................4-30
Manual Seats................................................... 2-2
Manual Windows............................................3-16
Message
DIC Warnings and Messages........................4-44
Mirrors
Manual Rearview.........................................3-42
Outside Convex Mirror.................................3-43
Outside Heated Mirrors................................3-44Mirrors (cont.)
Outside Manual Mirrors................................3-42
Outside Power Mirrors..................................3-43
Outside Towing Mirrors.................................3-42
MP3 .............................................................4-72
N
Navigation System, Privacy..............................8-20
New Vehicle Break-In......................................3-22
Noise Control System, Tampering......................6-51
O
Odometer......................................................4-22
Trip ...........................................................4-22
Off-Road
Recovery....................................................5-10
Oil
Engine.......................................................6-15
Engine Oil Life System.................................6-18
Pressure Gage............................................4-33
Pressure Light.............................................4-34
Older Children, Restraints................................2-30
Online Owner Center........................................ 8-5
8