2003 CHEVROLET EXPRESS CARGO VAN service reset

After you clean the player, press and hold the eject
button for ®ve seconds to reset the CLEAN indicator.
The radio will display --- or CLEANED to show the
indicator was reset.
Cassettes are subject to wear and the sound quality
may degrade over time. Always make sure the cassette
tape is in good condition before you have your tape
player serviced.
Care of Your CDs
Handle discs carefully. Store them in their original cases
or other protective cases and away from direct sunlight
and dust. If the surface of a disc is soiled, dampen
a clean, soft cloth in a mild, neutral detergent solution
and clean it, wiping from the center to the edge.
Be sure never to touch the side without writing when
handling discs. Pick up discs by grasping the outer
edges or the edge of the hole and the outer edge.
Care of Your CD Player
The use of CD lens cleaner discs is not advised, due to
the risk of contaminating the lens of the CD optics
with lubricants internal to the CD mechanism.
Fixed Mast Antenna
The ®xed mast antenna can withstand most car washes
without being damaged. If the mast should ever
become slightly bent, you can straighten it out by hand.
If the mast is badly bent, as it might be by vandals,
you should replace it.
Check occasionally to be sure the mast is still tightened
to the fender. If tightening is required, tighten by
hand, then with a wrench one quarter turn.
Chime Level Adjustment
The radio is the vehicle chime producer. The chime is
produced from the driver's side front door speakers.
To change the volume level, press and hold
pushbutton 6 with the ignition on and the radio power
off. The chime volume level will change from the normal
level to loud, and LOUD will be displayed on the
radio. To change back to the default or normal setting,
press and hold pushbutton 6 again. The chime level
will change from the loud level to normal, and NORMAL
will be displayed. Each time the chime volume is
changed, three chimes will sound to indicate the change.
Removing the radio and not replacing it with a factory
radio or chime module will disable vehicle chimes.
3-75

Scheduled Maintenance
The services shown in this schedule up to 100,000 miles
(166 000 km) should be repeated after 100,000 miles
(166 000 km) at the same intervals for the life of
this vehicle. The services shown at 150,000 miles
(240 000 km) should be repeated at the same interval
after 150,000 miles (240 000 km) for the life of this
vehicle.
See
Part B: Owner Checks and Services on page 6-11andPart C: Periodic MaintenanceInspections on
page 6-16.
Footnotes
²The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle's useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
+A good time to check your brakes is during tire
rotation. See Brake System Inspection on page 6-17.
Engine Oil and Chassis Lubrication
Scheduled Maintenance
Change engine oil and ®lter as indicated by the GM
Oil Life System (or every 12 months, whichever
occurs ®rst.) Reset the system.
Your vehicle has a computer system that lets you know
when to change the engine oil and ®lter. This is
based on engine revolutions and engine temperature,
and not on mileage. Based on driving conditions,
the mileage at which an oil change will be indicated can
vary considerably. For the oil life system to work
properly, you must reset the system every time the oil is
changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is
necessary. A CHANGE ENGINE OIL message will
come on. Change your oil as soon as possible within
the next two times you stop for fuel. It is possible that, if
you are driving under the best conditions, the oil life
system may not indicate that an oil change is necessary
for over a year. However, your engine oil and ®lter
must be changed at least once a year and at this time
the system must be reset. Your dealer has GM-trained
service people who will perform this work using
genuine GM parts and reset the system.
6-5

It is also important to check your oil regularly and keep
it at the proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed. See
Engine Oil on
page 5-13for information on resetting the system.
An Emission Control Service.
Lubricate chassis components with each engine oil
and ®lter change.
Lubricate the front suspension, kingpin bushings,
steering linkage and rear driveline center splines.
See the mileage intervals following for additional
services that may be performed with an engine oil
change and chassis lubrication. After the services are
performed, record the date, odometer reading and
who performed the service on the maintenance record
pages in Part E of this schedule.
7,500 Miles (12 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
15,000 Miles (25 000 km)
qInspect engine air cleaner ®lter change indicator. If
necessary, replace the ®lter. If vehicle is driven in
dusty/dirty conditions, inspect ®lter change indicator
at every engine oil change. See
Engine Air
Cleaner/Filter on page 5-17for more information.An Emission Control Service. (See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qVehicles With GVWR Above 10,000 lbs. Only:
Inspect shields for damage or looseness. Adjust or
replace as required.
This is a Noise Emission Control
Service. Applicable only to vehicles sold in the
United States.
qRotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
22,500 Miles (37 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
6-6

When to Change Engine Oil
If any one of these are true for you, use the short
trip/city maintenance schedule:
·Most trips are less than 5 miles (8 km). This is
particularly important when outside temperatures
are below freezing.
·Most trips include extensive idling (such as frequent
driving in stop-and-go traffic).
·You frequently tow a trailer or use a carrier on top
of your vehicle.
·The vehicle is used for delivery service, police, taxi
or other commercial application.
Driving under these conditions causes engine oil to
break down sooner. If any one of these is true for your
vehicle, then you need to change your oil and ®lter
every 3,000 miles (5 000 km) or 3 months Ð whichever
occurs ®rst.
If none of them is true, use the long trip/highway
maintenance schedule. Change the oil and ®lter every
7,500 miles (12 500 km) or 12 months Ð whichever
occurs ®rst. Driving a vehicle with a fully warmed engine
under highway conditions will cause engine oil to
break down slower.
How to Reset the CHANGE ENGINE
OIL Light
The GM Oil Life System calculates when to change
your engine oil and ®lter based on vehicle use. Anytime
your oil is changed, reset the system so it can
calculate when the next oil change is required. If a
situation occurs where you change your oil prior to a
CHANGE ENGINE OIL light being turned on, reset the
system.
To reset the CHANGE ENGINE OIL light, do the
following:
1. Turn the ignition key to RUN with the engine off.
2. Fully press and release the accelerator pedal
three times within ®ve seconds.
3. If the CHANGE ENGINE OIL light ¯ashes for ®ve
seconds, the system is reset.
If the system does not reset, try the procedure once
again. If it still does not reset, see your dealer for
service.
See
Change Engine Oil Light on page 3-37.
5-16

What to Do with Used Oil
Used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer.
Don't 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
®lter 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. Instead, recycle it by
taking it to a place that collects used oil. If you have a
problem properly disposing of your used oil, ask
your dealer, a service station or a local recycling center
for help.
Engine Air Cleaner/Filter
SeeEngine Compartment
Overview on page 5-12
for the location of the
engine air cleaner/®lter
and change indicator
(if equipped).
When to Inspect the Engine Air
Cleaner/Filter
If your vehicle is equipped with a ®lter change indicator
it will let you know when the ®lter needs to be
replaced. When the change indicator turns black or is in
the red/orange change zone, change the ®lter and
reset the indicator. Vehicles without a change indicator
inspect the air cleaner/®lter every 15,000 miles
(25 000 km) and replace the ®lter every 30,000 miles
(50 000 km). If you are driving in dusty/dirty conditions,
inspect the ®lter or change indicator at each engine
oil change.
5-17

Safety Belts (cont.)
Safety Belt Extender....................................1-33
Safety Belt Use During Pregnancy.................1-24
Safety Belts Are for Everyone.......................1-10
Safety Chains.................................................4-40
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-5
Seats.............................................................. 1-3
Manual........................................................ 1-3
Power Seat.................................................. 1-4
Rear Seat Operation...................................... 1-6
Reclining Seatbacks...................................... 1-4
Secondary Latch System.................................5-69
Securing a Child Restraint................................1-56
Center Seat Position....................................1-56
Designed for the LATCH System...................1-53
Rear Outside Seat Position...........................1-53
Right Front Seat Position..............................1-58
Security Light.................................................3-37
Service Bulletins.............................................7-10
Service Manuals............................................... 7-9
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-33
Publications Ordering Information..................... 7-9
Servicing Your Air Bag-Equipped Vehicle............1-73
Setting Preset PTYs................................3-52, 3-64
Setting Preset Stations............3-42, 3-45, 3-50, 3-61Setting the Time.............................................3-41
Radios with Radio Data Systems (RDS).........3-41
Radios without Radio Data Systems (RDS).....3-40
Setting the Tone (Bass/Treble).................3-42, 3-45,
3-50, 3-61
Sheet Metal Damage.......................................5-86
Shifting Into Park (P).......................................2-26
Shifting Out of Park (P)...................................2-29
Shoulder Belt Height Adjuster...........................1-18
Single Stage Air Bags.....................................1-67
Skidding........................................................4-12
Sliding Side Door............................................2-11
Some Other Rainy Weather Tips.......................4-17
Spare Tire Check............................................6-12
Special Fabric Cleaning Problems.....................5-81
Speci®cations, Capacities.................................5-97
Speedometer..................................................3-25
Starter Switch Check.......................................6-13
Starting Your Engine.......................................2-22
Steering and Suspension Inspection..................6-16
Steering in Emergencies.................................... 4-9
Steering Tips................................................... 4-8
Steering.......................................................... 4-8
Storage Areas................................................2-36
Storing a Flat or Spare Tire and Tools...............5-78
Stuck in Sand, Mud, Ice or Snow......................4-28
Sun Visors.....................................................2-19
Swing-Out Side Door, 60/40.............................2-13
Swing-Out Windows........................................2-18
13