2004 CHEVROLET CLASSIC check engine light

Automatic Transaxle Fluid
It is not necessary to check the transaxle fluid level. A
transaxle fluid leak is the only reason for fluid loss. If a
leak occurs, take the vehicle to the dealership service
department and have it repaired as soon as possible. You
may also have your fluid level checked by your dealer or
service center when you have your oil changed.
Change both the fluid and filter every 50,000 miles
(83 000 km) 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, the fluid and filter do not require changing.
Notice:Use of automatic transaxle uid labeled
other than DEXRON
®-III may damage your vehicle,
and the damages may not be covered by your
warranty. Always use DEXRON
®-III labeled automatic
transaxle uid.
Engine Coolant
The cooling system in your vehicle is filled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add
only DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, seeEngine Overheating on
page 5-22.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
•Give freezing protection down to−34°F (−37°C).
•Give boiling protection up to 265°F (129°C).
•Protect against rust and corrosion.
•Help keep the proper engine temperature.
•Let the warning lights and gages work as they
should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-19

Checking Coolant
The engine coolant surge tank is located in the engine
compartment on the passenger’s side of the vehicle.
SeeEngine Compartment Overview on page 5-12
for more information on location.
{CAUTION:
Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. Never turn the surge tank pressure
cap — even a little — when the engine and
radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the FULL
COLD mark or slightly higher.
If the low coolant light
comes on and stays on, it
means you’re low on
engine coolant.
SeeLow Coolant Warning Light on page 3-29for more
information.
5-21

A
Accessory Power Outlets.................................3-16
Adding Washer Fluid.......................................5-33
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-89
Adjusting the Speakers (Balance/Fade)......3-40, 3-45
Air Bag
Readiness Light..........................................3-26
Air Bag System, Supplemental Restraint
System (SRS).............................................1-56
Air Cleaner/Filter, Engine.................................5-17
Airbag Sensing and Diagnostic Module (SDM)....7-10
AM ...............................................................3-54
Antenna, Fixed Mast.......................................3-56
Anti-lock Brake System (ABS)............................ 4-6
Anti-Lock Brake System Warning Light...............3-28
Appearance Care............................................5-80
Care of Safety Belts....................................5-83
Chemical Paint Spotting...............................5-86
Cleaning the Inside of Your Vehicle................5-80
Cleaning the Outside of Your Vehicle..............5-83
Finish Damage............................................5-85
Sheet Metal Damage...................................5-85
Underbody Maintenance...............................5-86
Vehicle Care/Appearance Materials................5-86
Weatherstrips..............................................5-83
Ashtrays........................................................3-17Audio System(s).............................................3-36
Care of Your Cassette Tape Player................3-55
Care of Your CD Player...............................3-56
Care of Your CDs........................................3-56
Chime Level Adjustment...............................3-56
Fixed Mast Antenna.....................................3-56
Radio with Cassette and CD.........................3-43
Radio with CD............................................3-38
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-37
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-37
Theft-Deterrent Feature................................3-54
Understanding Radio Reception.....................3-54
Automatic Headlamp System............................3-13
Automatic Transaxle
Fluid..........................................................5-19
Operation...................................................2-20
Automatic Transaxle Inspection.........................6-17
Automatic Transaxle Shift Lock Control System
Check........................................................6-18
B
Backing Up....................................................4-42
Battery..........................................................5-38
Battery Replacement......................................... 2-6
Battery Run-Down Protection............................3-16
Before Leaving on a Long Trip.........................4-20
1

Body Lubrication Service..................................6-17
Brake
Parking......................................................2-23
System Inspection.......................................6-21
System Warning Light..................................3-27
Brake Adjustment............................................5-37
Brake Fluid....................................................5-34
Brake Pedal Travel.........................................5-37
Brake Wear...................................................5-36
Brakes..........................................................5-34
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-16
Bulb Replacement...........................................5-45
Center High-Mounted Stoplamp (CHMSL)........5-47
Front Turn Signal Lamps..............................5-47
Halogen Bulbs............................................5-45
Headlamps.................................................5-45
Replacement Bulbs......................................5-50
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-48
Buying New Tires...........................................5-62
C
California Fuel.................................................. 5-5
Capacities and Specifications............................5-95
Carbon Monoxide...................4-23, 4-38, 2-11, 2-27Care of
Safety Belts................................................5-83
Your Cassette Tape Player............................3-55
Your CD Player...........................................3-56
Your CDs ...................................................3-56
Cassette Tape Messages.................................3-50
Cassette Tape Player Service...........................6-16
CD Adapter Kits.............................................3-51
CD Messages........................................3-42, 3-53
Center Console Storage Area...........................2-31
Center High-Mounted Stoplamp (CHMSL)...........5-47
Center Rear Passenger Position, Safety Belts.....1-27
Chains, Tires..................................................5-66
Charging System Light....................................3-27
Check Engine Light.........................................3-30
Checking Coolant............................................5-21
Checking Engine Oil........................................5-13
Checking Your Restraint Systems......................1-62
Chemical Paint Spotting...................................5-86
Child Restraints
Child Restraint Systems...............................1-39
Infants and Young Children...........................1-35
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-45
Older Children.............................................1-32
Securing a Child Restraint Designed for the
LATCH System........................................1-48
Securing a Child Restraint in a Center Rear
Seat Position...........................................1-50
2

D
Daytime Running Lamps (DRL).........................3-13
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-20
Delayed Headlamps........................................3-14
Delayed Locking............................................... 2-8
Dinghy Towing................................................4-30
Doing Your Own Service Work........................... 5-3
Dolly Towing..................................................4-32
Dome Lamp...................................................3-15
Door
Ajar Light...................................................3-34
Delayed Locking........................................... 2-8
Door Ajar Reminder....................................... 2-8
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Locks............... 2-9
Rear Door Security Locks.............................2-10
Driver
Position, Safety Belt.....................................1-14
Six-Way Power Seat...................................... 1-3
Driving
At Night.....................................................4-14
City...........................................................4-18
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-19Driving (cont.)
Hill and Mountain Roads..............................4-22
In Rain and on Wet Roads...........................4-15
Winter........................................................4-23
Driving On Grades..........................................4-43
Driving on Snow or Ice....................................4-24
Driving Through Deep Standing Water...............4-17
Driving Through Flowing Water.........................4-17
Driving with a Trailer.......................................4-42
E
Electrical System
Add-On Equipment......................................5-89
Fuses and Circuit Breakers...........................5-90
Headlamp Wiring.........................................5-89
Power Windows and Other Power Options......5-89
Windshield Wiper Fuses...............................5-89
Emergency Trunk Release Handle.....................2-12
Emissions Inspection and Maintenance
Programs...................................................3-32
Engine
Air Cleaner/Filter.........................................5-17
Battery.......................................................5-38
Check and Service Engine Soon Light............3-30
Coolant......................................................5-19
Coolant Heater............................................2-19
4

Engine (cont.)
Coolant Temperature Gage...........................3-29
Cooling System Inspection............................6-21
Engine Compartment Overview......................5-12
Exhaust.....................................................2-27
Oil .............................................................5-13
Overheating................................................5-22
Starting......................................................2-18
Engine Compartment Fuse Block......................5-93
Engine Coolant Level Check.............................6-16
Engine Cooling When Trailer Towing..................4-44
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-16
Entry/Exit Lighting...........................................3-15
Event Data Records (EDR)..............................7-10
Express-Down Window....................................2-15
Extender, Safety Belt.......................................1-31
Exterior Lamps...............................................3-13
F
Filter
Engine Air Cleaner......................................5-17
Finding a Station....................................3-38, 3-44
Finding Program Type (PTY) Stations................3-46
Finish Care....................................................5-84Finish Damage...............................................5-85
Fixed Mast Antenna........................................3-56
Flash-to-Pass Feature....................................... 3-8
Flat Tire........................................................5-67
Flat Tire, Changing.........................................5-68
Fluid
Automatic Transaxle.....................................5-19
Power Steering...........................................5-31
Windshield Washer......................................5-32
FM ...............................................................3-54
Folding the Seatback........................................ 1-6
Following Distance..........................................4-42
Footnotes................................................6-7, 6-12
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.........................................................3-35
Gasoline Octane........................................... 5-4
Gasoline Specifications.................................. 5-5
System Inspection.......................................6-20
Fuses
Fuses and Circuit Breakers...........................5-90
Windshield Wiper.........................................5-89
5

G
Gage
Engine Coolant Temperature.........................3-29
Fuel..........................................................3-35
Speedometer..............................................3-24
Tachometer.................................................3-25
Garment Hooks..............................................2-31
Gasoline
Octane........................................................ 5-4
Specifications............................................... 5-5
Glove Box.....................................................2-31
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-6
Headlamp High/Low-Beam Changer.................... 3-7
Headlamp Wiring............................................5-89
Headlamps......................................3-7, 3-13, 5-45
Bulb Replacement.......................................5-45
Front Turn Signal Lamps..............................5-47
Halogen Bulbs............................................5-45
Headlamps Off in Park (P)...............................3-14
Headlamps On Reminder................................... 3-8Highway Hypnosis...........................................4-21
Hill and Mountain Roads..................................4-22
Hitches..........................................................4-41
Hood
Release.....................................................5-10
Horn............................................................... 3-5
How to Add Coolant to the Coolant Surge Tank......5-27
How to Check................................................5-60
How to Check Power Steering Fluid..................5-32
How to Inspect the Engine Air Cleaner/Filter.......5-18
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
Hydroplaning..................................................4-17
I
If No Steam Is Coming From Your Engine..........5-24
If Steam Is Coming From Your Engine...............5-23
If the Light Is Flashing.....................................3-31
If the Light Is On Steady.................................3-31
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.....................4-39
Ignition Positions.............................................2-17
Ignition Transaxle Lock Check..........................6-19
Infants and Young Children, Restraints...............1-35
Inflation - Tire Pressure...................................5-59
6

Locks
Delayed Locking........................................... 2-8
Door........................................................... 2-7
Leaving Your Vehicle....................................2-11
Lockout Protection.......................................2-11
Power Door.................................................. 2-8
Programmable Automatic Door Locks............... 2-9
Rear Door Security Locks.............................2-10
Long Trip/Highway Definition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-12
Loss of Control...............................................4-13
Low Coolant Warning Light..............................3-29
Low Washer Fluid Warning Light.......................3-34
M
Maintenance, Normal Replacement Parts............5-96
Maintenance Schedule
At Each Fuel Fill.........................................6-16
At Least Once a Month................................6-16
At Least Once a Year..................................6-17
At Least Twice a Year..................................6-17
Brake System Inspection..............................6-21
Engine Cooling System Inspection.................6-21
Exhaust System Inspection...........................6-20
Fuel System Inspection................................6-20Maintenance Schedule (cont.)
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled Maintenance.......6-12
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-16
Part C - Periodic MaintenanceInspections......6-20
Part D - Recommended Fluids and
Lubricants...............................................6-22
Part E - Maintenance Record........................6-23
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-20
Throttle System Inspection............................6-21
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-44
Making Turns.................................................4-42
Malfunction Indicator Light................................3-30
Manual Seats................................................... 1-2
Matching Transmitter(s) to Your Vehicle............... 2-5
Mexico, Central America and Caribbean
Islands/Countries (Except Puerto Rico
and U.S. Virgin Islands) – Customer
Assistance................................................... 7-5
8