2003 CHEVROLET ASTRO brake fluid

82,500 Miles (137 500 km)
0 Change engine oil and filter (or every 12 months,
0 Lubricate chassis components (or every 12 months,
0 Check readfront axle fluid level and add fluid as
whichever
occurs first).
An Emission Control Service.
whichever occurs first). (See footnote #).
needed. Check constant velocity joints and axle seals
for leaking.
page 5-64 for proper rotation pattern and additional
information.
(See footnote +).
0 Rotate tires. See Tire Inspection and Rotation on
90,000 Miles (150 000 km)
0 Change engine oil and filter (or every 12 months,
0 Lubricate chassis components (or every 12 months,
0 Check rear/front axle fluid level and add fluid as
whichever
occurs first).
An Emission Control Service.
whichever occurs first). (See footnote #).
needed. Check constant velocity joints and axle seals
for leaking.
0 For Two-Wheel-Drive vehicles only: Clean and repack
the front wheel bearings (or at each brake relining,
whichever occurs first).
Q Change automatic transmission fluid and filter 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.
If you do not use your vehicle under any of these
conditions, change the fluid and filter every
50,000 miles (83 000 km).
0 Replace fuel filter. An Emission Control Service.
(See footnote
t).
0 Replace engine air cleaner filter. An Emission
Control Service.
0 Rotate tires. See Tire Inspection and Rotation on
page
5-64 for proper rotation pattern and additional
information.
(See footnote +).
6-24

Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts
as needed. Replace any components that have high
effort or excessive wear.
Do not lubricate accelerator
and cruise control cables.
Transfer Case and Front Axle
(All-Wheel Drive) Inspection
Every 12 months, or at engine oil change intervals,
check front axle and transfer case and add lubricant
when necessary.
A fluid loss could indicate a problem.
Check and have it repaired, if needed. Check vent
hose at transfer case for kinks and proper installation.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and
rotors for surface condition. inspect other brake parts,
including calipers, parking brake, etc. Check parking
brake adjustment. You may need to have your brakes
inspected more often
if your driving habits or conditions
result in frequent braking.
6-31

Part D: Recommended Fluids
and Lubricants
Fluids and lubricants identified below by name, part
number or specification may be obtained from your
dealer.
Engine Coolant
t
I
Hydraulic
Brake System
Windshield Washer Solvent
Fluid/Lubricant
Engine oil with the American
Petroleum Institute Certified for
Gasoline Engines starburst symbol
of the proper viscosity.
To determine
the preferred viscosity for your
vehicle’s engine, see
Engine Oil
on page 5- 15.
50/50 mixture of clean, drinkable
water and use only DEX-COOL
Coolant. See
Engine Coolant on
page
5-28.
Delco Supreme 11 Brake Fluid
or equivalent DOT-3 brake fluid.
GM Optikleen Washer Solvent
or equivalent.
Usage I Fluid/Lubricant
~~~~~
Chassis Lubricant (GM Part
No. U.S. 12377985, in Canada
88901242, or equivalent) or lubricant meeting requirements of
NLGl #2, Category LB or GC-LB. Parking Brake
Cable Guides
GM Power Steering Fluid
(GM Part
No. US. 1052884, in
Canada 993294, or equivalent).
System Power
Automatic
I DEXRON-Ill Automatic
Transmission
Transmission
Fluid.
Key Lock
Cylinders Multi-Purpose
Lubricant, Superlube
(GM Part No.
U.S. 12346241,
in Canada 10953474, or equivalent).
Chassis Lubrication Chassis Lubricant (GM Part
No. U.S. 12377985,
in Canada
88901 242, or equivalent) or lubricant
meeting requirements of NLGl#2,
Category LB or GC-LB.
Front Wheel
Bearings Wheel
bearing lubricant meeting
requirements of NLGl#2,
Category GC or GC-LB (GM Part
No. U.S. 1051344,
in Canada 993037, or equivalent).
6-32

Accessory Power Outlets ................................. 3-16
Activating the Theft-Deterrent Feature
................ 3-48
Adding Equipment to Your Air Bag-Equipped
Vehicle
....................................................... 1-70
Adding Washer Fluid
....................................... 5-41
Additional Program Information
......................... 7-1 0
Additives, Fuel ................................................. 5-6
Add-On Electrical Equipment
............................ 5-92
Add-on Equipment
.......................................... 4-31
Adjusting the Speakers (Balance/Fade)
........ 3-40, 3-43
Air Bag
Readiness Light
.......................................... 3-26
Air Bag System
.............................................. 1-62
Adding Equipment to Your
Air Bag-Equipped Vehicle
...................... 1-70
How Does an Air Bag Restrain?
.................... 1-67
Servicing Your Air Bag-Equipped Vehicle
......... 1-69
What Will You See After an Air Bag inflates?
...... 1-68
When Should an Air Bag Inflate?
................... 1-66
Where Are the Air Bags?
.............................. 1-64
All Overseas Locations
...................................... 7-5
All-Wheel Drive
............................................... 5-52
All-Wheel Drive (AWD) System
......................... 2-26
All-Wheel-Drive Service Light
............................ 3-35
Aluminum Wheels
........................................... 5-88
What
Makes an Air Bag Inflate?
.................... 1-67
Air CleanedFiIter, Engine
... ...................... 5-24
AM
............................................................... 3-50 AM-FM Radio
...................... ................ 3-39
Antenna, Fixed Mast
....................................... 3-50
Anti-lock Brake System
..................................... 4-7
Anti-Lock Brake, System Warning Light
.............. 3-29
Appearance Care
............................................ 5-83
Care of Safety Belts
.................................... 5-86
Chemical Paint Spotting
............................... 5-89
Cleaning the Inside of Your Vehicle
................ 5-83
Finish Damage
............................................ 5-88
Sheet Metal Damage
................................... 5-88
Underbody Maintenance
............................... 5-89
Weatherstrips
.............................................. 5-86
Ashtrays
........................................................ 3-17
Audio System(s)
............................................. 3-38
Audio Systems
AM-FM Radio
............................................. 3-39
Care of Your CD Player
............................... 3-50
Care of Your CDs
........................................ 3-50
Fixed Mast Antenna
..................................... 3-50
Radio with CQ
............................................ 3-41
Rear Seat Audio (RSA)
................................ 3-46
Setting the Time for Radios with HR and
MN Buttons
............................................. 3-38
Setting the Time for Radios with the
Set Button
.............................................. 3-38
Theft-Deterrent Feature
................................ 3-47
Understanding Radio Reception
..................... 3-50
Cleaning
the Outside of Your Vehicle
.............. 5-86
GM Vehicle Care/Appearance Materials
.......... 5-89
1

Automatic Headlamp System ..................
Automatic Transmission
Fluid
................................................
Automatic Transmission Check ................
Automatic Transmission Shift Lock Control
System Check
...................................
Operation .........................................
......... 3-13
......... 5-25
......... 2-23
......... 6-27
......... 6-28
Backing Up
.................................................... 4-38
Battery
.......................................................... 5-46
Battery Replacement
......................................... 2-6
Battery Run-Down Protection
............................ 3-1 6
Before Leaving on a Long Trip
......................... 4-21
Bench Seat
............................................ 1-1 1, 1-57
Body Lubrication Service
.................................. 6-27
Brake Parking
...................................................... 2-26
System Inspection
....................................... 6-31
System Warning Light
.................................. 3-28
Brake Adjustment
............................................ 5-45
Brake Fluid
.................................................... 5-42
Brake Pedal Travel
......................................... 5-45
Brake Wear
................................................... 5-45
Brakes
.......................................................... 5-42
Braking in Emergencies
..................................... 4-9
Break-In, New Vehicle
..................................... 2-19
Braking
........................................................... 4-6
Bucket Seats, Rear
......................................... 1-12 Bulb
Replacement
........................................... 5-55
Halogen Bulbs ............................................ 5-55
Headlamps
............................ ......... 5-55
Replacement Bulbs
.............................. 5-61
Taillamps
.................................................... 5-60
Front
Turn Signal Lamps
.............................. 5-59
Buying New Tires
................................... 5-66
C
California Fuel .................................................. 5-6
Canada
........................................................... 7-5
Canadian Owners
................................................ ii
Canadian Roadside Assistance ............ ....... 7-7
Cancelling the Sliding Door
Security Lock
.......................................... 2-12
Capacities and Specifications
........................ 5-99
Carbon Monoxide
............... ..... 4-24, 4-31, 2-30
Care of
Safety Belts
.... ~ ~ ~ ~ ..................... 5-86
Care of Your
CD Player
.......... ...., ............ ..... 3-50
CDS
.......................................................... 3-50
Cargo Vans
........................................... 1-41, 1-48
Center Passenger Position, Safety Belts
............. 1-27
Chains, Tires
..................................... ..... 5-70
Charging System Light
....................... ..... 3-27
Engine Light
.............................. , ..... 3-30
Check
Gages Warning Light
................................... 3-36
2

Checking Brake Fluid .................................. 5-43
Checking Coolant ............................................ 5-29
Checking Engine Oil ........................................ 5-15
Checking Things Under the Hood ...................... 5-1 1
Checking Your Restraint Systems ...................... 1-71
Chemical Paint Spotting ................................... 5-89
Child Restraints
Child Restraint Systems
............................... 1-44
Infants and Young Children ........................... 1-38
Lower Anchorages and Top Tethers for
Children (LATCH System)
.......................... 1-52
Older Children ............................................. 1-35
Securing a Child Restraint Designed for
the LATCH System
................................ 1-54
Securing a Child Restraint in a Center
Seat Position
....................................... 1-57
Securing a Child Restraint in a Rear
Outside Seat Position
............................... 1-54
Securing a Child Restraint in the Right
Front Seat Position
................................... 1-59
Top Strap ................................................... 1-48
Top Strap Anchor Location ............................ 1-50
Where to Put the Restraint ........................... 1-47
Cigarette Lighter ............................................. 3-1 7
Cleaning
Inside of Your Vehicle
.................................. 5-83
Outside of Your Vehicle ................................ 5-86
Underbody Maintenance ............................... 5-89
Weatherstrips .............................................. 5-86
Cleaning Exterior Lamps/Lenses ....................... 5-86
Climate Control System ................................... 3-18
Rear .......................................................... 3-21
Rear Heating System ................................... 3-19
Compact Disc Messages .................................. 3-45
Compact Spare Tire ........................................ 5-82
Composite Headlamps ..................................... 5-56
Control of a Vehicle .......................................... 4-6
Convenience Net ............................................ 2-45
Coolant
Engine Temperature Gage
............................ 3-30
Heater, Engine ............................................ 2-22
Cooling System .............................................. 5-33
Cruise Control ................................................ 3-10
Current and Past Model Order Forms ................ 7-12
Customer Assistance Information
Customer Assistance for Text
Customer Assistance
Off ices ........................... 7-4
Customer Satisfaction Procedure ..................... 7-2
GM Mobility Program for Persons with
Disabilities
................................................ 7-5
Reporting Safety Defects to General Motors ....... 7-11
Reporting Safety Defects to the
Canadian Government
.............................. 7-11
Reporting Safety Defects to the United States Government
......................... 7-10
Roadside Assistance Program ......................... 7-6
Service Publications Ordering Information ........ 7-11
Rear Air Conditioning System ........................ 3-20
Courtesy Transportation ......... ...... 7-8
Telephone (TTY) Users ............................... 7-4
3

Gasoline Octane
........................................................ 5-5
Specifications
............................................... 5-5
Gate Operator and Canadian Programming
........ 2-36
Glass Surfaces
............................................... 5-85
GM Mobility Program for Persons with
Disabilities
.................................................... 7-5
Hatch R
H
e I' ease ......................... ........ 2-15
Hazard Warning Flashers
............................... 3-4
Head Restraints
............................................... 1-5
Headlamp High/Low-Beam Changer
.................... 3-7
Headlamp Wiring
............................................ 5-92
Headlamps
.................................................... 5-55
Bulb Replacement
.................................... 5-55
Front Turn Signal Lamps
.................. ..... 5-59
Halogen Bulbs
............................ ........ 5-55
Highway Hypnosis
........................................... 4-22
Hill and Mountain Roads
.................................. 4-22
Hitches
.......................................................... 4-36
HomeLink Transmitter, Programming
.................. 2-35
HomeLink@ Transmitter
.................................... 2-34
Hood Checking Things Under
................................ 5-1 1
Release
..................................................... 5-1 1
Horn
............................................................... 3-5 How
to Add Coolant to the Coolant
How to Add Coolant to the Radiator
.................. 5-37
How to Add Fluid
............................................ 5-27
How to Check
........................................ 5-25, 5-64
How to Check Lubricant
................................... 5-53
How to Check Power Steering Fluid
.................. 5-40
How to Use This Manual
...................................... ii
Recovery Tank ........................................ 5-34
How to Wear Safety Belts Properly
................... 1-18
Hydroplaning
.................................................. 4-18
I
If No Steam Is Coming From
Your Engine
............................................ 5-32
If Steam Is Coming From Your Engine ........... 5-31
If the Light
Is Flashing ..................................... 3-32
If the Light
Is On Steady ................................. 3-32
If You Are Stuck in Sand, Mud, Ice or Snow
....... 4-28
If You Do Decide
To Pull A Trailer ..................... 4-32
If You're Caught in a Blizzard ........................... 4-26
Ignition Transmission Lock Check
...................... 6-29
Infants and Young Children, Restraints
............... 1-38
Inflation
- Tire Pressure ................................... 5-64
Inspection Brake System
............................................. 6-31
Engine Cooling System
................................ 6-30
Ignition Positions
............................................. 2-19
6

Loading Your Vehicle ....................................... 4-29
Locks Door
........................................................... 2-7
Front Doors
.................................................. 2-8
Leaving Your Vehicle
.................................... 2-10
Power Door
.................................................. 2-8
Programmable Automatic Door Locks
............... 2-9
Long Trip/Highway Definition
.............................. 6-6
Long Trip/Highway Intervals
............................... 6-6
Long Trip/Highway Scheduled Maintenance
........ 6-1 8
Loss
of Control ............................................... 4-1 3
Low Fuel Warning Light
................................... 3-37
Lumbar
Luggage
Carrier
.............................................. 2-44
Manual Controls
............................................ 1-3
M
Maintenance. Normal Replacement Parts .......... 5-1 01
Maintenance Schedule At Each Fuel Fill
......................................... 6-26
At Least Once a Month
................................ 6-26
At Least Once a Year
.................................. 6-27
At Least Twice a Year
.................................. 6-26
Brake System Inspection
.............................. 6-31
Engine Cooling System Inspection
................. 6-30
Fuel System Inspection
................................ 6-30
How This Section is Organized
....................... 6-3
Exhaust System
Inspection
........................... 6-30 Maintenance Schedule (cont.)
Introduction
.................................................. 6-2
Long Trip/Highway Scheduled Maintenance
..... 6-18
Maintenance Requirements
............................. 6-2
Part A
. Scheduled Maintenance Services ......... 6-4
Part B
. Owner Checks and Services ............. 6-26
Part C
. Periodic Maintenance Inspections ...... 6-30
Part D
- Recommended Fluids and
Lubricants
............................................... 6-32
Part E
. Maintenance Record ........................ 6-34
Selecting the Right Schedule
.......................... 6-5
Short Trip/City Scheduled Maintenance
............. 6-7
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection
.......................... 6-30
Using Your
................................................... 6-4
Your Vehicle and the Environment
................... 6-2
Maintenance When Trailer Towing
..................... 4-40
Throttle
System Inspection
............................ 6-31
Making Turns
................................................. 4-38
Malfunction Indicator Light
................................ 3-30
Manual Lumbar Controls
.................................... 1-3
Manual Seats
................................................... 1-2
Manual Windows
........................................ 2-16
Mirrors Manual Rearview Mirror
................................ 2-32
Outside Convex Mirror
................................. 2-33
Outside Manual Mirrors
................................ 2-32
Outside Power Mirrors
.................................. 2-32
Model Reference
............................................ vi
8