change time CHEVROLET EXPRESS 2007 Owner's Manual

Towing a Trailer
If the vehicle has a diesel engine, see the DURAMAX®
Diesel manual for more information.
{WARNING:
The driver can lose control when pulling a trailer if
the correct equipment is not used or the vehicle is
not driven properly. For example, if the trailer is
too heavy, the brakes may not work well — or
even at all. The driver and passengers could be
seriously injured. The vehicle may also be
damaged; the resulting repairs would not be
covered by the vehicle warranty. Pull a trailer only
if all the steps in this section have been followed.
Ask your dealer/retailer for advice and information
about towing a trailer with the vehicle.Notice:Pulling a trailer improperly can damage the
vehicle and result in costly repairs not covered
by the vehicle warranty. To pull a trailer correctly,
follow the advice in this section and see your
dealer/retailer for important information about
towing a trailer with the vehicle.
To identify the trailering capacity of the vehicle, read the
information in “Weight of the Trailer” that appears
later in this section.
Trailering is different than just driving the vehicle by
itself. Trailering means changes in handling,
acceleration, braking, durability and fuel economy.
Successful, safe trailering takes correct equipment, and
it has to be used properly.
The following information has many time-tested,
important trailering tips and safety rules. Many of
these are important for your safety and that of your
passengers. So please read this section carefully before
pulling a trailer.
5-30

Engine Oil Additives / Engine Oil
Flushes
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM Standard
GM6094M are all that is needed for good performance
and engine protection.
Engine oil system flushes are not recommended and
could cause engine damage not covered by the vehicle
warranty.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that indicates when
to change the engine oil and filter. This is based on
engine revolutions and engine temperature, and not on
mileage. Based on driving conditions, the mileage at
which an oil change is indicated can vary considerably.
For the oil life system to work properly, the system
must be reset every time the oil is changed.When the system has calculated that oil life has been
diminished, it indicates that an oil change is necessary.
A CHANGE ENGINE OIL SOON message comes on.
SeeDIC Warnings and Messages on page 4-44. Change
the oil as soon as possible within the next 1 000 km
(600 miles). It is possible that, if driving under the best
conditions, the oil life system might not indicate that an oil
change is necessary for over a year. However, the engine
oil and filter must be changed at least once a year and at
this time the system must be reset. Your dealer/retailer
has trained service people who will perform this work
using genuine parts and reset the system. It is also
important to check the oil regularly and keep it at the
proper level.
If the system is ever reset accidentally, the oil must be
changed at 5 000 km (3,000 miles) since the last oil
change. Remember to reset the oil life system whenever
the oil is changed.
6-18

How to Reset the Engine Oil Life
System
The Engine Oil Life System calculates when to change
the engine oil and filter based on vehicle use. Whenever
the oil is changed, reset the system so it can calculate
when the next oil change is required. If a situation occurs
where the oil is changed prior to a CHANGE ENGINE OIL
SOON message being turned on, reset the system.
To reset the CHANGE ENGINE OIL SOON message:
1. Turn the ignition key to ON/RUN with the engine off.
2. Fully press and release the accelerator pedal
slowly three times within five seconds.
3. Turn the key to LOCK/OFF.
If the message comes back on when the vehicle
is started, the engine oil life system has not reset.
Repeat the procedure. If it still does not reset, see
your dealer/retailer for service.
What to Do with Used Oil
Used engine oil contains certain elements that can be
unhealthy for your skin and could even cause cancer.
Do not let used oil stay on your skin for very long. Clean
your skin and nails with soap and water, or a good
hand cleaner. Wash or properly dispose of clothing or
rags containing used engine oil. See the manufacturer’s
warnings about the use and disposal of oil products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from the
filter before disposal. Never dispose of oil by putting it
in the trash, pouring it on the ground, into sewers, or into
streams or bodies of water. Recycle it by taking it to a
place that collects used oil.
6-19

To inspect or replace the engine air cleaner/filter, do the
following:
1. Unhook the retainer clips and remove the cover.
2. Lift the filter out of the engine air cleaner/filter
housing. Care should be taken to dislodge as
little dirt as possible.
3. Clean the engine air cleaner/filter housing.
4. Inspect or replace the engine air cleaner/filter.
Make sure that the filter fits properly into the
housing.
5. Reinstall the cover and fasten the retaining clips.
{WARNING:
Operating the engine with the air cleaner/filter off
can cause you or others to be burned. The air
cleaner not only cleans the air; it helps to stop
flames if the engine backfires. If it is not there and
the engine backfires, you could be burned. Do not
drive with it off, and be careful working on the
engine with the air cleaner/filter off.Notice:If the air cleaner/lter is off, a backre
can cause a damaging engine re. And, dirt
can easily get into the engine, which will damage it.
Always have the air cleaner/lter in place when
you are driving.
Automatic Transmission Fluid
(4-Speed Transmission)
If your vehicle has the DURAMAX Diesel engine, see
the DURAMAX Diesel manual for more information.
When to Check and Change Automatic
Transmission Fluid
A good time to check your automatic transmission fluid
level is when the engine oil is changed.
Change the fluid and filter at the intervals listed in
Scheduled Maintenance on page 7-3, and be sure to
use the transmission fluid listed inRecommended Fluids
and Lubricants on page 7-12.
6-21

If the vehicle has dual rear wheels and the tread
design for the front tires is different from the dual
rear tires, always use the correct rotation pattern
shown here when rotating the tires. The dual tires
are rotated as a pair and the inside rear tires
become the outside rear tires.
When you install dual wheels, be sure that vent
holes in the inner and outer wheels on each
side are lined up.
Also seeDual Tire Operation on page 6-70for
additional information.
After the tires have been rotated, adjust the front
and rear inflation pressures as shown on the Tire
and Loading Information label. SeeInation - TirePressure on page 6-68andLoading the Vehicle
on page 5-19. Make certain that all wheel nuts are
properly tightened. See “Wheel Nut Torque” under
Capacities and Specications on page 6-116.
{WARNING:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the
vehicle. In an emergency, you can use a cloth
or a paper towel to do this; but be sure to use a
scraper or wire brush later, if needed, to get all
the rust or dirt off. SeeChanging a Flat Tire on
page 6-86.
If your vehicle has a Tire Pressure Monitor
System (TPMS), reset the TPMS sensors after
rotating the tires. SeeTire Pressure Monitor
Operation on page 6-72.
Make sure the spare tire is stored securely. Push,
pull, and then try to rotate or turn the tire. If it
moves, tighten the cable. SeeStoring a Flat or
Spare Tire and Tools on page 6-100.
6-77

When the Change Engine Oil Soon message displays,
certain services, checks, and inspections are required.
The services described for MaintenanceIshould be
performed at every engine oil change. The services
described for MaintenanceIIshould be performed when:
•MaintenanceIwas performed the last time the
engine oil was changed.
•It has been 10 months or more since the Change
Engine Oil Soon message has displayed or since the
last service.
MaintenanceI
•Change engine oil and filter. SeeEngine Oil on
page 6-15.An Emission Control Service.
•Engine coolant level check. SeeEngine Coolant on
page 6-29.
•Windshield washer fluid level check. SeeWindshield
Washer Fluid on page 6-39.
•Tire inflation check. SeeInation - Tire Pressure on
page 6-68.
•Tire wear inspection. SeeTire Inspection and
Rotation on page 6-75.
•Rotate tires. SeeTire Inspection and Rotation on
page 6-75.
•Fluids visual leak check (or every 12 months,
whichever occurs first). A leak in any system must
be repaired and the fluid level checked.
•Engine air cleaner filter inspection (vehicles driven
in dusty conditions only). SeeEngine Air
Cleaner/Filter on page 6-20.
•Brake system inspection (or every 12 months,
whichever occurs first).
7-4

Roadside Assistance Program
For U.S. purchased vehicles, call1-800-CHEV-USA
(1-800-243-8872); (Text telephone (TTY):
1-888-889-2438).
For Canadian purchased vehicles, call1-800-268-6800.
Service is available 24 hours a day, 365 days a year.
Calling for Assistance
When calling Roadside Assistance, have the following
information ready:
•Your name, home address, and home telephone
number
•Telephone number of your location
•Location of the vehicle
•Model, year, color, and license plate number of the
vehicle
•Odometer reading, Vehicle Identification Number
(VIN), and delivery date of the vehicle
•Description of the problem
Coverage
Services are provided up to 5 years/
100,000 miles (160 000 km), whichever comes first.
In the U.S., anyone driving the vehicle is covered.
In Canada, a person driving the vehicle without
permission from the owner is not covered.
Roadside Assistance is not a part of the New Vehicle
Limited Warranty. Chevrolet and General Motors of
Canada Limited reserve the right to make any changes
or discontinue the Roadside Assistance program at
any time without notification.
Chevrolet and General Motors of Canada Limited
reserve the right to limit services or payment to an owner
or driver if they decide the claims are made too often,
or the same type of claim is made many times.
8-8

Public Transportation or Fuel
Reimbursement
If your vehicle requires overnight warranty repairs, and
public transportation is used instead of the dealer’s
shuttle service, the expense must be supported by
original receipts and can only be up to the maximum
amount allowed by GM for shuttle service. In addition,
for U.S. customers, should you arrange transportation
through a friend or relative, limited reimbursement for
reasonable fuel expenses may be available. Claim
amounts should reflect actual costs and be supported
by original receipts. See your dealer for information
regarding the allowance amounts for reimbursement
of fuel or other transportation costs.
Courtesy Rental Vehicle
Your dealer may arrange to provide you with a courtesy
rental vehicle or reimburse you for a rental vehicle that
you obtain if your vehicle is kept for an overnight warranty
repair. Rental reimbursement will be limited and must
be supported by original receipts. This requires that you
sign and complete a rental agreement and meet state/
provincial, local, and rental vehicle provider requirements.Requirements vary and may include minimum age
requirements, insurance coverage, credit card, etc.
You are responsible for fuel usage charges and may also
be responsible for taxes, levies, usage fees, excessive
mileage, or rental usage beyond the completion of the
repair.
It may not be possible to provide a like-vehicle as a
courtesy rental.
Additional Program Information
All program options, such as shuttle service, may not be
available at every dealer. Please contact your dealer
for specific information about availability. All Courtesy
Transportation arrangements will be administered
by appropriate dealer personnel.
General Motors reserves the right to unilaterally modify,
change or discontinue Courtesy Transportation at
any time and to resolve all questions of claim eligibility
pursuant to the terms and conditions described
herein at its sole discretion.
8-12

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

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