check engine CHEVROLET ASTRO 2005 Service Manual

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK in each shift lever position.
The ignition should turn to LOCK only when the
shift lever is in PARK (P).
The key should come out only in LOCK.
Parking Brake and Automatic
Transmission Park (P) Mechanism
Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability: With
the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other
debris can collect.
6-27

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 uid 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,
chang, 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.
Part D: Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name,
part number or specication may be obtained from
your dealer.
Usage Fluid/Lubricant
Engine OilEngine oil which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certied for Gasoline Engines
starburst symbol. GM Goodwrench
oil meets all the requirements for
your vehicle. To determine the
proper viscosity for your vehicle’s
engine, seeEngine Oil on
page 5-13.
Engine Coolant50/50 mixture of clean,
drinkable water and use only
DEX-COOL
®Coolant. SeeEngine
Coolant on page 5-26.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
Washer SolventGM Optikleen
®Washer Solvent.
6-29

Audio System(s) (cont.)
Setting the Time for Radios with
HR and MN Buttons.................................3-40
Setting the Time for Radios with the
Set Button..............................................3-40
Theft-Deterrent Feature................................3-48
Understanding Radio Reception.....................3-50
Automatic Headlamp System............................3-16
Automatic Transmission
Fluid..........................................................5-23
Operation...................................................2-20
B
Battery..........................................................5-42
Run-Down Protection...................................3-17
Before Leaving on a Long Trip.........................4-20
Bench Seat....................................................1-11
Brake
Anti-Lock Brake System (ABS)........................ 4-7
Emergencies................................................ 4-8
Parking......................................................2-23
System Inspection.......................................6-29
System Warning Light..................................3-28
Brakes..........................................................5-38
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-16
Bucket Seats, Rear.........................................1-17Bulb Replacement...........................................5-50
Front Turn Signal and Parking Lamps.............5-54
Halogen Bulbs............................................5-50
Replacement Bulbs......................................5-56
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-55
Buying New Tires...........................................5-67
C
California Fuel.................................................. 5-6
Canadian Owners................................................ ii
Capacities and Specications..........................5-101
Carbon Monoxide...........................2-26, 4-23, 4-34
Care of
Safety Belts................................................5-87
Your CD Player...........................................3-50
Your CDs ...................................................3-50
Center Rear Passenger Position, Safety Belts.....1-34
Chains, Tire...................................................5-71
Charging System Light....................................3-27
Check
Engine Light...............................................3-30
Gages Warning Light...................................3-35
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-91
Child Restraints
Child Restraint Systems...............................1-46
Infants and Young Children...........................1-40
2

Customer Assistance Information (cont.)
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-12
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Doing Your Own Service Work........................... 5-4
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.......................................... 2-8
Driver
Position, Safety Belt.....................................1-23
Driver Information Center (DIC).........................3-37
Driving
At Night.....................................................4-14
City...........................................................4-18
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-19
Hill and Mountain Roads..............................4-21
In Rain and on Wet Roads...........................4-15Driving (cont.)
Rocking Your Vehicle to Get it Out.................4-28
Winter........................................................4-23
E
Electrical System
Add-On Equipment......................................5-94
Fuses and Circuit Breakers...........................5-95
Headlamp Wiring.........................................5-94
Instrument Panel Fuse Block.........................5-96
Power Windows and Other Power Options......5-94
Underhood Fuse Block.................................5-98
Windshield Wiper Fuses...............................5-94
Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-42
Check and Service Engine Soon Light............3-30
Coolant......................................................5-26
Coolant Heater............................................2-19
Coolant Temperature Gage...........................3-29
Cooling System Inspection............................6-28
Cover........................................................5-17
Engine Compartment Overview......................5-12
Exhaust.....................................................2-26
Fan Noise..................................................5-35
Fuel Regulator............................................2-19
4

Engine (cont.)
Oil .............................................................5-13
Overheating................................................5-28
Starting......................................................2-18
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................7-10
Exit Lighting...................................................3-17
Extender, Safety Belt.......................................1-37
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-21
Finish Damage...............................................5-91
Fixed Mast Antenna........................................3-50
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-71
Flat Tire, Changing.........................................5-72
Flat Tire, Storing.............................................5-82
Fluid
Automatic Transmission................................5-23
Power Steering...........................................5-36
Windshield Washer......................................5-37
Front Axle......................................................5-49
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10Fuel (cont.)
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-36
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-36
Regulator...................................................2-19
System Inspection.......................................6-28
Fuses
Fuses and Circuit Breakers...........................5-95
Instrument Panel Fuse Block.........................5-96
Underhood Fuse Block.................................5-98
Windshield Wiper.........................................5-94
GGage
Check Gages Warning Light..........................3-35
Engine Coolant Temperature.........................3-29
Fuel..........................................................3-36
Oil Pressure...............................................3-33
Speedometer..............................................3-25
Voltmeter Gage...........................................3-27
Garage Door Opener.......................................2-29
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
GM Mobility Reimbursement Program.................. 7-6
5

H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamp Wiring............................................5-94
Headlamps
Automatic Headlamp System.........................3-16
Bulb Replacement.......................................5-50
Daytime Running Lamps...............................3-15
Flash-to-Pass............................................... 3-8
Front Turn Signal and Parking Lamps.............5-54
Halogen Bulbs............................................5-50
Headlamps and Sidemarker Lamps................5-50
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-14
Headlamps and Sidemarker Lamps...................5-50
Heater...........................................................3-19
Highbeam On Light.........................................3-34
Highway Hypnosis...........................................4-21
Hill and Mountain Roads..................................4-21
HomeLink
®Transmitter....................................2-29
HomeLink®Transmitter, Programming................2-30
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-23
I
Ignition Positions.............................................2-17
Infants and Young Children, Restraints...............1-40
Ination -- Tire Pressure..................................5-64
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
Throttle System...........................................6-29
Transfer Case and Front Axle
(All-Wheel Drive)......................................6-29
Instrument Panel
Brightness..................................................3-16
Cluster.......................................................3-24
Overview..................................................... 3-4
J
Jump Starting.................................................5-42
6

M
Maintenance, Normal Replacement Parts..........5-102
Maintenance Schedule
At Each Fuel Fill.........................................6-24
At Least Once a Month................................6-24
At Least Once a Year..................................6-25
At Least Twice a Year..................................6-24
Brake System Inspection..............................6-29
Engine Cooling System Inspection.................6-28
Exhaust System Inspection...........................6-28
Fuel System Inspection................................6-28
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.............6-24
Part C - Periodic Maintenance Inspections......6-28
Part D - Recommended Fluids and
Lubricants...............................................6-29Maintenance Schedule (cont.)
Part E - Maintenance Record........................6-31
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-7
Steering, Suspension and Front Drive
Axle Boot and Seal Inspection...................6-28
Throttle System Inspection............................6-29
Transfer Case and Front Axle
(All-Wheel Drive) Inspection.......................6-29
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-30
Manual Lumbar Controls.................................... 1-4
Manual Seats................................................... 1-3
Manual Windows............................................2-14
Mirrors
Manual Rearview Mirror................................2-28
Outside Convex Mirror.................................2-29
Outside Manual Mirror..................................2-28
Outside Power Mirrors..................................2-28
MyGMLink.com................................................ 7-4
8

N
New Vehicle Break-In......................................2-16
Normal Maintenance Replacement Parts...........5-102
O
Odometer......................................................3-25
Odometer, Trip...............................................3-25
Off-Road Recovery..........................................4-11
Oil
Engine.......................................................5-13
Pressure Gage............................................3-33
Older Children, Restraints................................1-38
Online Owner Center........................................ 7-4
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-21
Outside
Convex Mirror.............................................2-29
Manual Mirror.............................................2-28
Power Mirrors.............................................2-28
Overhead Console..........................................2-35
Owners, Canadian............................................... ii
P
Park (P)
Shifting Into................................................2-24
Shifting Out of............................................2-25
Parking
Brake........................................................2-23
Over Things That Burn.................................2-26
Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-24
Part C - Periodic Maintenance Inspections..........6-28
Part D - Recommended Fluids and Lubricants....6-29
Part E - Maintenance Record...........................6-31
Passing.........................................................4-11
Passlock
®......................................................2-16
Power
Accessory Outlets........................................3-17
Door Locks.................................................. 2-7
Electrical System.........................................5-94
Retained Accessory (RAP)............................2-18
Seat............................................................ 1-3
Steering Fluid.............................................5-36
Windows....................................................2-15
Programmable Automatic Door Locks.................. 2-7
Programming the HomeLink
®Transmitter...........2-30
9