maintenance CHEVROLET EXPRESS CARGO VAN 2004 1.G Owner's Guide

(c)Visually inspect hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
ttings and clamps; replace with genuine GM parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.
(d)Visually inspect wiper blades for wear or cracking.
Replace blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken air bag
coverings, and have them repaired or replaced. (The air
bag system does not need regular maintenance.)
(f)Lubricate all key lock cylinders, hood hinges, hood
prop rod pivot, hood latch assembly, secondary
latch, pivots, spring anchor, release pawl, rear
compartment hinges, latches, locks, fuel door hinge and
any moving seat hardware. More frequent lubrication
may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal
better and not stick or squeak.(g)Vehicles 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.
(h)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery
service.
(i)Drain, ush and rell cooling system. See Engine
Coolant on page 5-22for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(j)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the uid level checked. Add uid if needed.
6-8

Normal Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained by your dealer.
Part Engine (VIN Code) GM Part Number ACDelco®Part Number
Engine Air Cleaner/Filter
4.3L (W) V6
4.8L (V), 5.3L (T), 6.0L (U) V8—
—A1621C
A1621C
Engine Oil Filter
4.3L (W) V6
4.8L (V), 5.3L (T), 6.0L (U) V825010792
25010633PF47
PF44
Fuel Filter
4.3L (W) V6
4.8L (V), 5.3L (T), 6.0L (U) V825121792
25121792GF626
GF626
Passenger Compartment Air Filter Kit
4.3L (W) V6
4.8L (V), 5.3L (T), 6.0L (U) V852485513
52485513—
—
PCV Valve
4.3L (W) V66487532 CV 769-C
Spark Plugs
4.3L (W) V6
4.8L (V), 5.3L (T), 6.0L (U) V825162556
—41–932
41–985
Wiper Blades 15153642 —
Wiper Blade Length 22 inches (56.0 cm)
Wiper Blade Type ITTA
6-14

Maintenance Record
After the scheduled services are performed, record the date, odometer reading, who performed the service and the
type of services performed in the boxes provided. SeeMaintenance Requirements on page 6-2in this section.
Any additional information fromOwner Checks and Services on page 6-9can be added on the following record pages.
Also, you should retain all maintenance receipts.
Maintenance Record
DateOdometer
ReadingServiced ByMaintenanceIor
MaintenanceIIServices Performed
6-16

Maintenance Record (cont’d)
DateOdometer
ReadingServiced ByMaintenanceIor
MaintenanceIIServices Performed
6-17

Maintenance Record (cont’d)
DateOdometer
ReadingServiced ByMaintenanceIor
MaintenanceIIServices Performed
6-18

Online Owner Center
The Owner Center is a resource for your GM ownership
needs. You can nd your specic vehicle information
all in one place.
The Owner Center allows you to:
Get e-mail service reminders.
Access information about your specic vehicle,
including tips and videos and an electronic
version of this owner’s manual. (United States only)
Keep track of your vehicle’s service history and
maintenance schedule.
Find GM dealers for service nationwide.
Receive special promotions and privileges only
available to members. (United States only)
Refer to the web for updated information.
To register your vehicle, visit www.MyGMLink.com.
(United States) or My GM Canada within
www.gmcanada.com (Canada).
Customer Assistance for Text
Telephone (TTY) Users
To assist customers who are deaf, hard of hearing, or
speech-impaired and who use Text Telephones (TTYs),
Chevrolet has TTY equipment available at its Customer
Assistance Center. Any TTY user can communicate
with Chevrolet by dialing: 1-800-833-CHEV (2438).
(TTY users in Canada can dial 1-800-263-3830.)
Customer Assistance Offices
Chevrolet encourages customers to call the toll-free
number for assistance. If a U.S. customer wishes
to write to Chevrolet, the letter should be addressed to
Chevrolet’s Customer Assistance Center.
7-4

Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle, suspension,
brakes, electrical, steering, body, etc.
RETAIL SELL PRICE: $120.00
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments, and specications for GM
transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE: $50.00
Service Bulletins
Service Bulletins give 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.
In Canada, information pertaining to Product Service
Bulletins can be obtained by contacting your General
Motors dealer or by calling 1-800-GM-DRIVE
(1-800-463-7483).
Owner’s Information
Owner publications are written specically for owners
and intended to provide basic operational information
about the vehicle. The owner’s manual will include
the Maintenance Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner’s Manual, and
Warranty Booklet.
RETAIL SELL PRICE: $35.00
Without Portfolio: Owner’s Manual only.
RETAIL SELL PRICE: $25.00
7-12

A
Accessory Power Outlets.................................3-18
Adding Equipment to Your Air Bag-Equipped
Vehicle.......................................................1-81
Adding Washer Fluid.......................................5-38
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-101
Add-On Equipment..........................................4-38
Adjusting the Speakers
(Balance/Fade)....................3-45, 3-47, 3-53, 3-63
Air Bag
Off Light.....................................................3-28
Readiness Light..........................................3-27
Air Bag System..............................................1-70
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-81
Air Bag Off Switch.......................................1-77
How Does an Air Bag Restrain?....................1-75
Servicing Your Air Bag-Equipped Vehicle.........1-80
What Makes an Air Bag Inate?....................1-75
What Will You See After an Air Bag Inates?......1-76
When Should an Air Bag Inate?...................1-74
Where Are the Air Bags?..............................1-72
Air Bag Systems.............................................1-75
Air Cleaner/Filter, Engine.................................5-18
Airbag Sensing and Diagnostic Module (SDM)....7-10
All-Wheel Drive...............................................5-48
All-Wheel Drive (AWD) System.........................2-26AM ...............................................................3-73
AM-FM Radio.................................................3-43
Antenna, Fixed Mast.......................................3-75
Anti-lock Brake System..................................... 4-7
Anti-Lock Brake, System Warning Light..............3-32
Appearance Care............................................5-92
Care of Safety Belts....................................5-95
Chemical Paint Spotting...............................5-98
Cleaning the Inside of Your Vehicle................5-92
Cleaning the Outside of Your Vehicle..............5-95
Finish Damage............................................5-98
Sheet Metal Damage...................................5-98
Underbody Maintenance...............................5-98
Vehicle Care/Appearance Materials................5-99
Weatherstrips..............................................5-95
Ashtrays........................................................3-18
Audio System(s).............................................3-42
AM-FM Radio.............................................3-43
Care of Your Cassette Tape Player................3-73
Care of Your CD Player...............................3-75
Care of Your CDs........................................3-74
Chime Level Adjustment...............................3-75
Fixed Mast Antenna.....................................3-75
Radio with Cassette and CD.........................3-50
Radio with CD............................................3-46
Radio with Six-Disc CD................................3-61
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-43
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-43
1

Cargo Vans with a Passenger Air Bag and
without an Air Bag Off Switch........................1-40
Cassette Tape Messages.................................3-58
CD Adapter Kits.............................................3-58
CD Messages................................3-50, 3-61, 3-72
Center High-Mounted Stoplamp.........................3-16
Center Passenger Position, Safety Belts.....1-24, 1-25
Chains, Tire...................................................5-74
Charging System Light....................................3-30
Check
Engine Light...............................................3-34
Gages Warning Light...................................3-41
Check Engine Light.........................................3-34
Checking Brake Fluid......................................5-40
Checking Coolant............................................5-24
Checking Engine Oil........................................5-13
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-98
Child Restraints
Child Restraint Systems...............................1-43
Infants and Young Children...........................1-36
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-53
Older Children.............................................1-34
Securing a Child Restraint Designed
for the LATCH System......................1-55, 1-56
Securing a Child Restraint in a Center
Seat Position...................................1-61, 1-62
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-58Child Restraints (cont.)
Securing a Child Restraint in the Right
Front Seat Position...................................1-65
Top Strap...................................................1-50
Top Strap Anchor Location............................1-51
Where to Put the Restraint...........................1-46
Chime Level Adjustment..................................3-75
Cigarette Lighter.............................................3-18
Cleaning
Inside of Your Vehicle..................................5-92
Outside of Your Vehicle................................5-95
Underbody Maintenance...............................5-98
Weatherstrips..............................................5-95
Cleaning Aluminum Wheels..............................5-97
Cleaning Exterior Lamps/Lenses.......................5-96
Cleaning Fabric/Carpet....................................5-92
Cleaning Glass Surfaces..................................5-94
Cleaning Interior Plastic Components.................5-94
Cleaning Leather............................................5-94
Cleaning the Top of the Instrument Panel...........5-94
Cleaning the Windshield and Wiper Blades.........5-97
Cleaning Tires................................................5-97
Cleaning Vinyl................................................5-94
Climate Control System...................................3-19
Outlet Adjustment........................................3-21
Rear Air Conditioning and Heating System......3-22
Rear Heating System...................................3-22
Control of a Vehicle.......................................... 4-5
3

E
Electrical System
Add-On Equipment.....................................5-101
Fuses and Circuit Breakers.........................5-102
Headlamp Wiring.......................................5-101
Windshield Wiper Fuses.............................5-101
Electronic Road-Speed Governor.......................3-26
Emissions Inspection and Maintenance
Programs...................................................3-37
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-42
Change Engine Oil Light...............................3-38
Check and Service Engine Soon Light............3-34
Coolant......................................................5-22
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-34
Drive Belt Routing.......................................6-15
Engine Compartment Overview......................5-12
Exhaust.....................................................2-30
Fan Noise..................................................5-36
Oil .............................................................5-13
Overheating................................................5-26
Reduced Power Light...................................3-40
Starting......................................................2-21
Engine Compartment Fuse Block.....................5-103
Engine Oil Additives........................................5-16
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................7-10Exit Lighting...................................................3-17
Extender, Safety Belt.......................................1-33
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-18
Finding a Program Type (PTY) Station.......3-54, 3-64
Finding a Station....................3-44, 3-46, 3-51, 3-62
Finish Care....................................................5-96
Finish Damage...............................................5-98
Fixed Mast Antenna........................................3-75
Flash-To-Pass Feature....................................... 3-9
Flat Tire........................................................5-75
Flat Tire, Changing.........................................5-76
Floor Console Fuse Block..............................5-102
Fluid
Automatic Transmission................................5-19
Power Steering...........................................5-36
Windshield Washer......................................5-38
FM ...............................................................3-73
Following Distance..........................................4-48
Front Axle......................................................5-50
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-8
5