2003 CHEVROLET ASTRO CARGO VAN engine

Part D: Recommended Fluids
and Lubricants
Fluids and lubricants identi®ed below by name, part
number or speci®cation may be obtained from your
dealer.
Usage Fluid/Lubricant
Engine OilEngine oil with the American
Petroleum Institute Certi®ed 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.
Engine Coolant50/50 mixture of clean, drinkable
water and use only
DEX-COOL
žCoolant. SeeEngine
Coolant on page 5-28.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake ¯uid.
Windshield
Washer SolventGM Optikleen
žWasher Solvent or
equivalent.
Parking Brake
Cable GuidesChassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242, or equivalent) or
lubricant meeting requirements of
NLGI #2, Category LB or GC-LB.
Usage Fluid/Lubricant
Power Steering
SystemGM Power Steering Fluid (GM Part
No. U.S. 1052884, in Canada
993294, or equivalent).
Automatic
TransmissionDEXRON
ž-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).
Chassis
LubricationChassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242, or equivalent) or
lubricant meeting requirements of
NLGI #2, Category LB or GC-LB.
Front Wheel
BearingsWheel bearing lubricant meeting
requirements of NLGI #2, Category
GC or GC-LB (GM Part No. U.S.
1051344, in Canada 993037, or
equivalent).
6-32

Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe that your vehicle
has a safety defect, you should immediately notify
Transport Canada, in addition to notifying General
Motors of Canada Limited. You may write to:
Transport Canada
330 Sparks Street
Tower C
Ottawa, Ontario K1A 0N5
Reporting Safety Defects to
General Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, we certainly hope you'll notify us.
Please call us at 1-800-222-1020, or write:
Chevrolet Motor Division
Chevrolet Customer Assistance Center
P.O. Box 33170
Detroit, MI 48232-5170
In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
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 speci®cations for GM
transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE: $50.00
7-11

A
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.........................7-10
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 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 Makes an Air Bag In¯ate?....................1-67
What Will You See After an Air Bag In¯ates?......1-68
When Should an Air Bag In¯ate?...................1-66
Where Are the Air Bags?..............................1-64
Air Bag .........................................................3-26
Readiness Light..........................................3-26
Air Cleaner/Filter, Engine.................................5-24
All-Wheel Drive (AWD) System.........................2-26
All-Wheel Drive...............................................5-52
All-Wheel-Drive Service Light............................3-35
AM-FM Radio.................................................3-39AM ...............................................................3-50
Antenna, Fixed Mast.......................................3-50
Anti-Lock Brake, System Warning Light..............3-29
Anti-lock Brake System..................................... 4-7
Appearance Care............................................5-83
Care of Safety Belts....................................5-86
Chemical Paint Spotting...............................5-89
Cleaning the Inside of Your Vehicle................5-83
Cleaning the Outside of Your Vehicle..............5-86
Finish Damage............................................5-88
Sheet Metal Damage...................................5-88
Underbody Maintenance...............................5-89
Vehicle Care/Appearance Materials................5-89
Weatherstrips..............................................5-86
Ashtrays........................................................3-17
Audio System(s).............................................3-38
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 CD............................................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
1

Checking Brake Fluid......................................5-43
Checking Coolant............................................5-29
Checking Engine Oil........................................5-15
Checking Things Under the Hood......................5-11
Checking Your Restraint Systems......................1-71
Check...........................................................3-30
Engine Light...............................................3-30
Gages Warning Light...................................3-36
Chemical Paint Spotting...................................5-89
Child Restraints..............................................1-44
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 Anchor Location............................1-50
Top Strap...................................................1-48
Where to Put the Restraint...........................1-47
Cigarette Lighter.............................................3-17
Cleaning Aluminum Wheels..............................5-88
Cleaning Exterior Lamps/Lenses.......................5-86Cleaning Fabric/Carpet....................................5-83
Cleaning Glass Surfaces..................................5-85
Cleaning Interior Plastic Components.................5-85
Cleaning Leather............................................5-85
Cleaning the Top of the Instrument Panel...........5-85
Cleaning the Windshield and Wiper Blades.........5-87
Cleaning Tires................................................5-88
Cleaning Vinyl................................................5-85
Cleaning........................................................5-83
Inside of Your Vehicle..................................5-83
Outside of Your Vehicle................................5-86
Underbody Maintenance...............................5-89
Weatherstrips..............................................5-86
Climate Control System...................................3-18
Rear Air Conditioning System........................3-20
Rear Heating System...................................3-19
Rear..........................................................3-21
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.........................................................3-30
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
3

Electrical System (cont.)
Power Windows and Other Power Options......5-92
Windshield Wiper Fuses...............................5-92
Emissions Inspection and Maintenance
Programs...................................................3-33
Engine Coolant Level Check.............................6-26
Engine Oil Additives........................................5-18
Engine Oil Level Check...................................6-26
Engine..........................................................5-24
Air Cleaner/Filter.........................................5-24
Battery.......................................................5-46
Check and Service Engine Soon Light............3-30
Compartment Overview................................5-14
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-30
Coolant......................................................5-28
Cooling System Inspection............................6-30
Cover........................................................5-20
Exhaust.....................................................2-30
Fan Noise..................................................5-39
Oil .............................................................5-15
Overheating................................................5-31
Starting......................................................2-21
Entry Lighting.................................................3-15
Erasing HomeLink
žButtons..............................2-37
Except Cargo Vans.................................1-38, 1-47
Exit Lighting...................................................3-15Express-Down Window....................................2-17
Extender, Safety Belt.......................................1-34
Exterior Lamps...............................................3-12
F
Filter.............................................................5-24
Engine Air Cleaner......................................5-24
Finding a Station....................................3-39, 3-41
Finish Care....................................................5-87
Finish Damage...............................................5-88
Fixed Mast Antenna........................................3-50
Flash-to-Pass................................................... 3-7
Flat Tire, Changing.........................................5-71
Flat Tire........................................................5-70
Fluid.............................................................5-25
Automatic Transmission................................5-25
Power Steering...........................................5-40
Windshield Washer......................................5-41
FM ...............................................................3-50
Following Distance..........................................4-38
Front Axle......................................................5-54
Front Doors..................................................... 2-8
Fuel Regulator................................................2-21
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
5

Fuel (cont.)
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-36
Gasoline Octane........................................... 5-5
Gasoline Speci®cations.................................. 5-5
Low Warning Light.......................................3-37
System Inspection.......................................6-30
Fuses...........................................................5-93
Fuses and Circuit Breakers...........................5-93
Windshield Wiper.........................................5-92
G
Gage............................................................3-36
Check Gages Warning Light..........................3-36
Engine Coolant Temperature.........................3-30
Fuel..........................................................3-36
Oil Pressure...............................................3-34
Speedometer..............................................3-25
Voltmeter Gage...........................................3-28
Garage Door Opener.......................................2-34
Gasoline......................................................... 5-5
Octane........................................................ 5-5
Speci®cations............................................... 5-5Gasoline (cont.)
Gate Operator and Canadian Programming........2-36
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hatch Release................................................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
žTransmitter, Programming................2-35
HomeLinkžTransmitter....................................2-34
Hood............................................................5-11
Checking Things Under................................5-11
Release.....................................................5-11
Horn............................................................... 3-5
6

How to Add Coolant to the Coolant
Recovery Tank............................................5-34
How to Add Coolant to the Radiator..................5-37
How to Add Fluid............................................5-27
How to Check Lubricant...................................5-53
How to Check Power Steering Fluid..................5-40
How to Check........................................5-25, 5-64
How to Inspect the Engine Air Cleaner/Filter.......5-24
How to Use This Manual...................................... ii
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 Positions.............................................2-19
Ignition Transmission Lock Check......................6-29
Infants and Young Children, Restraints...............1-38
In¯ation Ð Tire Pressure.................................5-64
Inspection......................................................6-31
Brake System.............................................6-31
Engine Cooling System................................6-30Inspection (cont.)
Exhaust System..........................................6-30
Fuel System...............................................6-30
Part C - Periodic Maintenance.......................6-30
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-30
Throttle System...........................................6-31
Transfer Case and Front Axle
(All-Wheel Drive)......................................6-31
Installing a Garage Door Opener.......................2-40
Instrument Panel Brightness Control..................3-15
Instrument Panel Fuse Block............................5-93
Instrument Panel.............................................3-24
Cluster.......................................................3-24
Overview..................................................... 3-2
Interior Lamps................................................3-15
J
Jump Starting.................................................5-47
K
Key Lock Cylinders Service..............................6-27
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
7

L
Lamps On Reminder.......................................3-14
Lamps...........................................................3-12
Exterior......................................................3-12
Interior.......................................................3-15
Lap Belt........................................................1-27
Lap-Shoulder Belt...................................1-18, 1-29
LATCH System...............................................1-52
Child Restraints...........................................1-52
Securing a Child Restraint Designed for the
LATCH System........................................1-54
Latches, Seatback............................................ 1-6
Leaving Your Vehicle With the
Engine Running..........................................2-28
Leaving Your Vehicle.......................................2-10
Light.............................................................3-26
Air Bag Readiness.......................................3-26
Anti-Lock Brake System Warning...................3-29
Brake System Warning.................................3-28
Charging System.........................................3-27
Check Gages Warning.................................3-36
Low Fuel Warning.......................................3-37
Malfunction Indicator....................................3-30
Safety Belt Reminder...................................3-26
Security.....................................................3-35
Service All-Wheel-Drive................................3-35
Tow/Haul Mode...........................................3-36Loading Your Vehicle.......................................4-29
Locking Rear Axle............................................ 4-9
Locks............................................................. 2-7
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 De®nition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-18
Loss of Control...............................................4-13
Low Fuel Warning Light...................................3-37
Luggage Carrier..............................................2-44
Lumbar........................................................... 1-3
Manual Controls............................................ 1-3
M
Maintenance, Normal Replacement Parts..........5-101
Maintenance Schedule.....................................6-26
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
Exhaust System Inspection...........................6-30
8