2004 CHEVROLET ASTRO CARGO VAN service indicator

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-7
Safety Belts
.............................................1-13
Child Restraints
.......................................1-35
Air Bag System
.......................................1-62
Restraint System Check
............................1-68
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-7
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-17
Starting and Operating Your Vehicle
...........2-18
Mirrors
....................................................2-31
HomeLink
®Transmitter
.............................2-32
Storage Areas
.........................................2-36
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-17
Warning Lights, Gages, and Indicators
........3-22
Audio System(s)
.......................................3-35
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-29Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
................. 5-9
All-Wheel Drive
........................................5-50
Rear Axle
...............................................5-51
Front Axle
...............................................5-52
Bulb Replacement
....................................5-53
Windshield Wiper Blade Replacement
.........5-59
Tires
......................................................5-60
Appearance Care
.....................................5-91
Vehicle Identication
.................................5-99
Electrical System
....................................5-100
Capacities and Specications
...................5-107
Normal Maintenance Replacement Parts
....5-109
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-11
Index................................................................ 1
2004 Chevrolet Astro Owner ManualM

Instrument Panel Overview...............................3-2
Hazard Warning Flashers................................3-4
Other Warning Devices...................................3-5
Horn.............................................................3-5
Tilt Wheel.....................................................3-5
Turn Signal/Multifunction Lever.........................3-6
Exterior Lamps.............................................3-12
Interior Lamps..............................................3-14
Accessory Power Outlets...............................3-15
Ashtrays and Cigarette Lighter........................3-16
Climate Controls............................................3-17
Climate Control System.................................3-17
Outlet Adjustment.........................................3-19
Rear Heating System....................................3-20
Rear Air Conditioning System.........................3-20
Warning Lights, Gages, and Indicators............3-22
Instrument Panel Cluster................................3-23
Speedometer and Odometer...........................3-24
Safety Belt Reminder Light.............................3-24
Air Bag Readiness Light................................3-25
Charging System Light..................................3-26
Voltmeter Gage............................................3-26
Brake System Warning Light..........................3-27Anti-Lock Brake System Warning Light.............3-28
Engine Coolant Temperature Gage..................3-28
Malfunction Indicator Lamp.............................3-29
Oil Pressure Gage........................................3-32
Security Light...............................................3-33
Service All-Wheel Drive Light.........................3-33
Tow/Haul Mode Light....................................3-34
Check Gages Warning Light...........................3-34
Fuel Gage...................................................3-34
Low Fuel Warning Light.................................3-35
Audio System(s).............................................3-35
Setting the Time for Radios with
the Set Button..........................................3-36
Setting the Time for Radios with
HR and MN Buttons..................................3-36
AM-FM Radio...............................................3-36
Radio with CD..............................................3-38
Rear Seat Audio (RSA).................................3-43
Theft-Deterrent Feature..................................3-44
Radio Reception...........................................3-47
Care of Your CDs.........................................3-47
Care of Your CD Player................................3-47
Fixed Mast Antenna......................................3-47
Section 3 Instrument Panel
3-1

Malfunction Indicator Lamp
Service Engine Soon Light
in the United States or
Check Engine Light in Canada
Your vehicle is equipped with a computer which
monitors operation of the fuel, ignition, and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The SERVICE ENGINE SOON or CHECK
ENGINE light comes on and a chime will sound to
indicate that there is a problem and service is required.Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
Notice:If you keep driving your vehicle with
this light on, after a while, your emission controls
may not work as well, your fuel economy may not be
as good, and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system of
your vehicle or the replacement of the original tires
with other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modications to these systems could lead to costly
repairs not covered by your warranty. This may
also result in a failure to pass a required Emission
Inspection/Maintenance test. United States
Canada
3-29

Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work properly.
You should not have to add anything to your fuel.
However, some gasolines contain only the minimum
amount of additive required to meet U.S. Environmental
Protection Agency regulations. General Motors
recommends that you buy gasolines that are advertised
to help keep fuel injectors and intake valves clean. If your
vehicle experiences problems due to dirty injectors or
valves, try a different brand of gasoline.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines may be available
in your area to contribute to clean air. General
Motors recommends that you use these gasolines,
particularly if they comply with the specications
described earlier.
Notice:Your vehicle was not designed for fuel
that contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in your fuel
system and also damage the plastic and rubber
parts. That damage would not be covered under
your warranty.Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. General Motors does
not recommend the use of such gasolines. Fuels
containing MMT can reduce the life of spark plugs and
the performance of the emission control system may be
affected. The malfunction indicator lamp may turn on.
If this occurs, return to your authorized GM dealer
for service.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to nd. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not
be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in
the country where you will be driving.
5-6

K
Key Lock Cylinders Service..............................6-23
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-12
Interior.......................................................3-14
Lamps On Reminder.......................................3-13
Lap Belt........................................................1-27
Lap-Shoulder Belt...................................1-18, 1-29
LATCH System
Child Restraints...........................................1-51
Securing a Child Restraint Designed
for the LATCH System..............................1-54
Latches, Seatback............................................ 1-6
Leaving Your Vehicle......................................... 2-9
Leaving Your Vehicle With the Engine
Running.....................................................2-27
Light
Air Bag Readiness.......................................3-25
Anti-Lock Brake System Warning...................3-28Light (cont.)
Brake System Warning.................................3-27
Charging System.........................................3-26
Check Gages Warning.................................3-34
Low Fuel Warning.......................................3-35
Malfunction Indicator....................................3-29
Safety Belt Reminder...................................3-24
Security.....................................................3-33
Service All-Wheel-Drive................................3-33
Tow/Haul Mode...........................................3-34
Loading Your Vehicle.......................................4-29
Locking Rear Axle............................................ 4-8
Locks
Door........................................................... 2-7
Leaving Your Vehicle..................................... 2-9
Power Door.................................................. 2-8
Programmable Automatic Door Locks............... 2-8
Long Trip/Highway Denition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-16
Loss of Control...............................................4-13
Low Fuel Warning Light...................................3-35
Luggage Carrier..............................................2-43
Lumbar
Manual Controls............................................ 1-4
8

M
Maintenance, Normal Replacement Parts..........5-109
Maintenance Schedule
At Each Fuel Fill.........................................6-22
At Least Once a Month................................6-22
At Least Once a Year..................................6-23
At Least Twice a Year..................................6-22
Brake System Inspection..............................6-27
Engine Cooling System Inspection.................6-26
Exhaust System Inspection...........................6-26
Fuel System Inspection................................6-26
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled
Maintenance............................................6-16
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-22
Part C - Periodic Maintenance Inspections......6-26
Part D - Recommended Fluids and
Lubricants...............................................6-28
Part E - Maintenance Record........................6-30
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6Maintenance Schedule (cont.)
Steering, Suspension and Front Drive
Axle Boot and Seal Inspection...................6-26
Throttle System Inspection............................6-27
Transfer Case and Front Axle
(All-Wheel Drive) Inspection.......................6-27
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-44
Making Turns.................................................4-42
Malfunction Indicator Light................................3-29
Manual Lumbar Controls.................................... 1-4
Manual Seats................................................... 1-3
Manual Windows............................................2-15
Matching Transmitter(s) to Your Vehicle............... 2-6
Mexico, Central America and Caribbean
Islands/Countries (Except Puerto Rico and
U.S. Virgin Islands) – Customer Assistance....... 7-5
Mirrors
Manual Rearview Mirror................................2-31
Outside Convex Mirror.................................2-32
Outside Manual Mirror..................................2-31
Outside Power Mirrors..................................2-31
Model Reference................................................ vi
MyGMLink.com................................................ 7-4
9

Transportation Options...................................... 7-8
Trip Odometer................................................3-24
Turn and Lane Change Signals.......................... 3-6
Turn Signal/Multifunction Lever........................... 3-6
Turn Signals When Towing a Trailer..................4-43
U
Underbody Flushing Service.............................6-25
Underhood Fuse Block...................................5-104
Understanding Radio Reception........................3-47
Uniform Tire Quality Grading............................5-74
United States – Customer Assistance.................. 7-4
Unlocking the Theft-Deterrent Feature
After a Power Loss......................................3-46
Used Replacement Wheels..............................5-76
Using Cleaner on Fabric..................................5-92
Using HomeLink
®...........................................2-35
V
Vehicle
Control........................................................ 4-5
Damage Warnings........................................... iv
Loading......................................................4-29
Symbols......................................................... ivVehicle Data Collection and Event
Data Recorders...........................................7-10
Vehicle Identication
Number (VIN).............................................5-99
Service Parts Identication Label...................5-99
Vehicle Storage..............................................5-44
Ventilation Adjustment......................................3-19
Visor Vanity Mirror..........................................2-16
Visors...........................................................2-16
Voltmeter Gage..............................................3-26
W
Warning Lights, Gages and Indicators................3-22
Warnings
Hazard Warning Flashers............................... 3-4
Other Warning Devices.................................. 3-5
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Washing Your Vehicle......................................5-95
Weatherstrip Lubrication...................................6-23
Weight of the Trailer........................................4-36
Weight of the Trailer Tongue.............................4-38
What Kind of Engine Oil to Use........................5-14
What to Do with Used Oil................................5-17
15