2004 CHEVROLET ASTRO coolant

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals speci®ed to
help ensure the safety, dependability and emission
control performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any ¯uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel ®ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-13for further
details.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOLž
coolant mixture if necessary. SeeEngine Coolant
on page 5-24for further details.
Windshield Washer Fluid Level Check
Check the windshield washer ¯uid level in the
windshield washer tank and add the proper ¯uid if
necessary. See
Windshield Washer Fluid on page 5-35for further details.
At Least Once a Month
Tire In¯ation Check
Visually inspect your tires and make sure tires are
in¯ated to the correct pressures. Do not forget to check
your spare tire. See
Tires on page 5-52for further details.
At Least Twice a Year
Restraint System Check
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.)
6-24

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 which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certi®ed for Gasoline Engines
starburst symbol. To determine the
proper viscosity for your vehicle's
engine, see
Engine Oil on
page 5-13.
Engine Coolant50/50 mixture of clean, drinkable
water and use only
DEX-COOL
žCoolant. SeeEngine
Coolant on page 5-24.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake ¯uid.
Usage Fluid/Lubricant
Windshield
Washer SolventGM Optikleen
žWasher Solvent.
Parking Brake
Cable GuidesChassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242) or lubricant meeting
requirements of NLGI #2, Category
LB or GC-LB.
Power Steering
SystemGM Power Steering Fluid (GM Part
No. U.S. 89021184, in Canada
89021186).
Automatic
TransmissionDEXRON
ž-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Chassis
LubricationChassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242) or lubricant meeting
requirements of NLGI #2, Category
LB or GC-LB.
6-30

Canceling the Sliding Door
Security Lock..............................................2-10
Capacities and Speci®cations..........................5-102
Carbon Monoxide...........................4-24, 4-35, 2-28
Care of
Safety Belts................................................5-89
Your CD Player...........................................3-50
Your CDs ...................................................3-50
Cargo Van Models..........................................1-50
Cargo Vans...........................................1-41, 1-48
CD Messages................................................3-45
Center Passenger Position, Safety Belts.............1-27
Chains, Tires..................................................5-74
Charging System Light....................................3-27
Check
Engine Light...............................................3-30
Gages Warning Light...................................3-36
Checking Brake Fluid......................................5-40
Checking Coolant............................................5-26
Checking Engine Oil........................................5-13
Checking Things Under the Hood....................... 5-9
Checking Your Restraint Systems......................1-70
Chemical Paint Spotting...................................5-93
Child Restraints
Child Restraint Systems...............................1-44
Infants and Young Children...........................1-38Child Restraints (cont.)
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-52
Older Children.............................................1-35
Securing a Child Restraint Designed for
the LATCH System...................................1-55
Securing a Child Restraint in a Center
Seat Position...........................................1-58
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-55
Securing a Child Restraint in the Right
Front Seat Position...................................1-60
Top Strap...................................................1-48
Top Strap Anchor Location............................1-50
Where to Put the Restraint...........................1-47
Cigarette Lighter.............................................3-17
Cleaning
Inside of Your Vehicle..................................5-87
Outside of Your Vehicle................................5-90
Underbody Maintenance...............................5-93
Weatherstrips..............................................5-89
Cleaning Aluminum Wheels..............................5-92
Cleaning Exterior Lamps/Lenses.......................5-90
Cleaning Fabric/Carpet....................................5-87
Cleaning Glass Surfaces..................................5-89
Cleaning Interior Plastic Components.................5-89
3

Cleaning Leather............................................5-88
Cleaning the Top of the Instrument Panel...........5-89
Cleaning the Windshield and
Wiper Blades..............................................5-91
Cleaning Tires................................................5-92
Cleaning Vinyl................................................5-88
Climate Control System...................................3-18
Outlet Adjustment........................................3-20
Rear Air Conditioning System........................3-21
Rear Heating System...................................3-21
Compact Spare Tire........................................5-86
Composite Headlamps.....................................5-51
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-41
Coolant
Engine Temperature Gage............................3-30
Heater, Engine............................................2-20
Cooling System..............................................5-30
Cruise Control................................................3-10
Current and Past Model Order Forms................7-12
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone
(TTY) Users.............................................. 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2Customer Assistance Information (cont.)
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
D
Daytime Running Lamps (DRL).........................3-14
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-19
Directing the Air¯ow........................................3-22
Disabling the Theft-Deterrent Feature.................3-49
Doing Your Own Service Work........................... 5-3
Dome Lamps.................................................3-16
Door
Locks.......................................................... 2-6
Power Door Locks......................................... 2-7
Programmable Automatic Door Locks............... 2-7
Rear Doors.................................................2-11
Sliding Side Door.......................................... 2-9
4

Driver
Position, Safety Belt.....................................1-18
Driver Information System................................2-38
Driving
At Night.....................................................4-14
City...........................................................4-19
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-20
Hill and Mountain Roads..............................4-22
In Rain and on Wet Roads...........................4-16
Winter........................................................4-24
Driving On Grades..........................................4-42
Driving on Snow or Ice....................................4-25
Driving Through Deep Standing Water...............4-18
Driving Through Flowing Water.........................4-18
Driving with a Trailer.......................................4-41
E
Electrical System
Add-On Equipment......................................5-95
Fuses and Circuit Breakers...........................5-96
Headlamp Wiring.........................................5-96
Power Windows and Other Power Options......5-96
Windshield Wiper Fuses...............................5-96
Emissions Inspection and Maintenance
Programs...................................................3-33Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-42
Check and Service Engine Soon Light............3-30
Coolant......................................................5-25
Coolant Heater............................................2-20
Coolant Temperature Gage...........................3-30
Cooling System Inspection............................6-28
Cover........................................................5-17
Drive Belt Routing......................................5-105
Engine Compartment Overview......................5-12
Exhaust.....................................................2-28
Fan Noise..................................................5-36
Oil .............................................................5-13
Overheating................................................5-28
Starting......................................................2-19
Engine Coolant Level Check.............................6-24
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-24
Entry Lighting.................................................3-15
Erasing HomeLinkžButtons..............................2-33
Event Data Records (EDR)................................ 7-9
Except Cargo Vans.................................1-38, 1-47
Exit Lighting...................................................3-15
Express-Down Window....................................2-15
Extender, Safety Belt.......................................1-34
Exterior Lamps...............................................3-12
5

F
Filter
Engine Air Cleaner......................................5-21
Finding a Station....................................3-39, 3-41
Finish Care....................................................5-90
Finish Damage...............................................5-93
Fixed Mast Antenna........................................3-50
Flash-to-Pass................................................... 3-7
Flat Tire........................................................5-74
Flat Tire, Changing.........................................5-75
Fluid
Automatic Transmission................................5-22
Power Steering...........................................5-37
Windshield Washer......................................5-38
FM ...............................................................3-50
Following Distance..........................................4-41
Footnotes................................................6-7, 6-16
Front Axle......................................................5-48
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-36Fuel (cont.)
Gasoline Octane........................................... 5-4
Gasoline Speci®cations.................................. 5-5
Low Warning Light.......................................3-37
System Inspection.......................................6-28
Fuel Regulator................................................2-19
Fuses
Fuses and Circuit Breakers...........................5-96
Windshield Wiper.........................................5-96
G
Gage
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
Gasoline
Octane........................................................ 5-4
Speci®cations............................................... 5-5
Gate Operator and Canadian Programming........2-33
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
6

H
Hatch Release................................................2-13
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-5
Headlamp High/Low-Beam Changer.................... 3-7
Headlamp Wiring............................................5-96
Headlamps....................................................5-50
Bulb Replacement.......................................5-49
Front Turn Signal Lamps..............................5-53
Halogen Bulbs............................................5-49
Highway Hypnosis...........................................4-22
Hill and Mountain Roads..................................4-22
Hitches..........................................................4-39
HomeLink
žTransmitter, Programming................2-31
Hood
Checking Things Under.................................. 5-9
Release.....................................................5-10
Horn............................................................... 3-5
How to Add Coolant to the Coolant
Recovery Tank............................................5-32
How to Add Coolant to the Radiator..................5-34
How to Add Fluid............................................5-25
How to Check........................................5-23, 5-67
How to Check Lubricant...................................5-48
How to Check Power Steering Fluid..................5-37How to Inspect the Engine Air
Cleaner/Filter..............................................5-22
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..........5-29
If Steam Is Coming From Your Engine...............5-28
If the Light Is Flashing.....................................3-32
If the Light Is On Steady.................................3-32
If You Are Caught in a Blizzard.........................4-26
If You Are Stuck in Sand, Mud, Ice or Snow.......4-28
If You Do Decide To Pull A Trailer.....................4-36
Ignition Positions.............................................2-17
Ignition Transmission Lock Check......................6-27
Infants and Young Children, Restraints...............1-38
In¯ation - Tire Pressure...................................5-66
Inspection
Brake System.............................................6-29
Engine Cooling System................................6-28
Exhaust System..........................................6-28
Fuel System...............................................6-28
Part C - Periodic Maintenance.......................6-28
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-28
7

Starting Your Engine.......................................2-19
Steering.......................................................... 4-9
Steering in Emergencies..................................4-10
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..............................6-28
Steering Tips................................................... 4-9
Storage Areas................................................2-34
Convenience Net.........................................2-41
Luggage Carrier..........................................2-41
Overhead Console.......................................2-36
Storing a Flat or Spare Tire and Tools...............5-85
Stuck in Sand, Mud, Ice or Snow......................4-28
Sun Visors.....................................................2-15
Sunglasses Storage Compartment.....................2-40
T
Taillamps.......................................................5-54
Theft-Deterrent, Radio.....................................3-47
Theft-Deterrent Systems...................................2-16
Passlock
ž...................................................2-16
Throttle System Inspection...............................6-29
Tilt Wheel........................................................ 3-5
Tire In¯ation Check.........................................6-24
Tire Sidewall Labeling......................................5-57
Tire Size.......................................................5-62
Tire Terminology and De®nitions........................5-63Tires.............................................................5-56
Buying New Tires........................................5-70
Chains.......................................................5-74
Changing a Flat Tire....................................5-75
Compact Spare Tire.....................................5-86
If a Tire Goes Flat.......................................5-74
In¯ation - Tire Pressure................................5-66
Inspection and Rotation................................5-68
Uniform Tire Quality Grading.........................5-71
Wheel Alignment and Tire Balance.................5-72
Wheel Replacement.....................................5-72
When It Is Time for New Tires......................5-69
To Use the Engine Coolant Heater....................2-20
Top Strap......................................................1-48
Top Strap Anchor Location...............................1-50
Torque Lock...................................................2-27
Total Weight on Your Vehicle's Tires..................4-39
Tow/Haul Mode...............................................4-36
Tow/Haul Mode Button.....................................2-23
Tow/Haul Mode Light.......................................3-36
Towing
Recreational Vehicle.....................................4-29
Towing a Trailer..........................................4-35
Your Vehicle...............................................4-29
Trailer Brakes.................................................4-40
Trailer Wiring Harness.....................................4-44
Trailering Package..........................................4-35
14