2004 CHEVROLET EPICA engine

Vehicle Data Collection and Event
Data Recorders
Your vehicle, like other modern motor vehicles, has a
number of sophisticated computer systems that
monitor and control several aspects of the vehicle’s
performance. Your vehicle uses on-board vehicle
computers to monitor emission control components to
optimize fuel economy, to monitor conditions for air bag
deployment and, if so equipped, to provide anti-lock
braking and to help the driver control the vehicle
in difficult driving situations. Some information may be
stored during regular operations to facilitate repair
of detected malfunctions; other information is stored only
in a crash or near crash event by computer systems
commonly called event data recorders (EDR).
In a crash or near crash event, computer systems, such
as the Air Bag Sensing and Diagnostic Module (SDM)
in your vehicle may record information about the
condition of the vehicle and how it was operated, such
as engine speed, brake applications, throttle position,
vehicle speed, safety belt usage, air bag readiness, air
bag performance data, and the severity of a collision.
This information has been used to improve vehicle
crash performance and may be used to improve crash
performance of future vehicles and driving safety.
Unlike the data recorders on many airplanes, these
on-board systems do not record sounds, such as
conversation of vehicle occupants.To read this information, special equipment is needed
and access to the vehicle or the SDM is required.
GM will not access information about a crash event or
share it with others other than•with the consent of the vehicle owner or, if the
vehicle is leased, with the consent of the lessee,
•in response to an official request of police or similar
government office,
•as part of GM’s defense of litigation through the
discovery process, or
•as required by law.
In addition, once GM collects or receives data, GM may
•use the data for GM research needs,
•make it available for research where appropriate
confidentiality is to be maintained and need is
shown, or
•share summary data which is not tied to a specific
vehicle with non-GM organizations for research
purposes.
Others, such as law enforcement, may have access to
the special equipment that can read the information
if they have access to the vehicle or SDM.
If your vehicle is equipped with OnStar
®, please check
the OnStar®subscription service agreement or manual
for information on its operations and data collection.
7-10

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 specifications
for GM transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE: $50.00
7-12

A
Accessory Power Outlets.................................3-17
Adaptive Shift Logic........................................2-24
Adding Washer Fluid.......................................5-31
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-78
Adjusting the Speakers (Balance/Fade)..............3-50
Air Bag
Readiness Light..........................................3-33
Air Bag Systems.............................................1-46
How Does an Air Bag Restrain?....................1-52
Servicing Your Air Bag-Equipped Vehicle.........1-54
What Makes an Air Bag Inflate?....................1-52
What Will You See After an Air Bag
Inflates?..................................................1-53
When Should an Air Bag Inflate?...................1-51
Where Are the Air Bags?..............................1-49
Air Cleaner/Filter, Engine.................................5-17
Airbag Sensing and Diagnostic Module (SDM)....7-10
AM ...............................................................3-59
Antenna, Backglass.........................................3-60
Anti-lock Brake System (ABS)............................ 4-6
Anti-Lock Brake, System Warning Light..............3-36
Appearance Care............................................5-68
Care of Safety Belts....................................5-72
Chemical Paint Spotting...............................5-75Appearance Care (cont.)
Cleaning the Inside of Your Vehicle................5-69
Cleaning the Outside of Your Vehicle..............5-72
Finish Damage............................................5-74
Sheet Metal Damage...................................5-74
Underbody Maintenance...............................5-75
Vehicle Care/Appearance Materials................5-75
Weatherstrips..............................................5-72
Arming the System.........................................2-15
Ashtrays........................................................3-18
Audio System(s).............................................3-48
Audio Steering Wheel Controls......................3-59
Backglass Antenna......................................3-60
Care of Your CD Player...............................3-60
Care of Your CDs........................................3-59
Radio with CD............................................3-48
Theft-Deterrent Feature................................3-58
Trunk-Mounted CD Changer..........................3-55
Understanding Radio Reception.....................3-59
Automatic Climate Control System.....................3-22
Automatic Operation........................................3-22
Automatic Transaxle
Fluid..........................................................5-19
Operation...................................................2-22
Automatic Transaxle Inspection.........................6-19
Automatic Transaxle Shift Lock Control
System Check.............................................6-20
Auto-Off Headlamps........................................3-14
1

Check
Engine Light...............................................3-39
Check Engine Light.........................................3-39
Checking Coolant............................................5-20
Checking Engine Oil........................................5-14
Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-55
Chemical Paint Spotting...................................5-75
Child Restraints
Child Restraint Systems...............................1-34
Infants and Young Children...........................1-30
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-40
Older Children.............................................1-28
Securing a Child Restraint Designed for
the LATCH System...................................1-43
Securing a Child Restraint in a Center Rear
Seat Position...........................................1-46
Securing a Child Restraint in a Rear Outside
Seat Position...........................................1-43
Securing a Child Restraint in the Right Front
Seat Position...........................................1-46
Top Strap...................................................1-37
Top Strap Anchor Location............................1-39
Where to Put the Restraint...........................1-37
Cigarette Lighter.............................................3-18Cleaning
Inside of Your Vehicle..................................5-69
Outside of Your Vehicle................................5-72
Underbody Maintenance...............................5-75
Weatherstrips..............................................5-72
Cleaning Aluminum Wheels..............................5-74
Cleaning Exterior Lamps/Lenses.......................5-73
Cleaning Fabric/Carpet....................................5-69
Cleaning Glass Surfaces..................................5-71
Cleaning Interior Plastic Components.................5-71
Cleaning Leather............................................5-71
Cleaning the Top of the Instrument Panel...........5-71
Cleaning Tires................................................5-74
Cleaning Vinyl................................................5-70
Cleaning Windshield and Wiper Blades..............5-73
Climate Control System...................................3-18
Air Filter, Passenger Compartment.................3-28
Automatic...................................................3-22
Outlet Adjustment........................................3-28
Clock............................................................3-46
Coinholder(s)..................................................2-33
Control of a Vehicle.......................................... 4-5
Coolant
Engine Temperature Gage............................3-39
Heater, Engine............................................2-21
Surge Tank Pressure Cap.............................5-21
3

Driving
At Night.....................................................4-15
City...........................................................4-19
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-20
Hill and Mountain Roads..............................4-22
In Rain and on Wet Roads...........................4-16
Winter........................................................4-24
Driving on Snow or Ice....................................4-25
Driving Through Deep Standing Water...............4-18
Driving Through Flowing Water.........................4-18
E
Electrical System
Add-On Equipment......................................5-78
Fuses and Circuit Breakers...........................5-79
Headlamp Wiring.........................................5-78
Power Windows and Other Power Options......5-78
Windshield Wiper Fuses...............................5-78
Emergency Trunk Release Handle.....................2-12Emissions Inspection and Maintenance
Programs...................................................3-41
Engine
Air Cleaner/Filter.........................................5-17
Battery.......................................................5-35
Check and Service Engine Soon Light............3-39
Coolant......................................................5-19
Coolant Heater............................................2-21
Coolant Temperature Gage...........................3-39
Cooling System Inspection............................6-23
Engine Compartment Overview......................5-12
Exhaust.....................................................2-29
Oil .............................................................5-13
Overheating................................................5-22
Starting......................................................2-20
Engine Compartment Fuse Block......................5-81
Engine Coolant Level Check.............................6-18
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-18
Entry Lighting.................................................3-16
Event Data Recorders (EDR)............................7-10
Express-Down Window....................................2-14
Exterior Lamps...............................................3-13
5

F
Filter
Engine Air Cleaner......................................5-17
Finding a Station............................................3-48
Finish Care....................................................5-73
Finish Damage...............................................5-74
Flash-to-Pass Feature....................................... 3-8
Flat Tire........................................................5-61
Flat Tire, Changing.........................................5-62
Fluid
Automatic Transaxle.....................................5-19
Power Steering...........................................5-30
Windshield Washer......................................5-31
FM ...............................................................3-59
Fog Lamps....................................................3-15
Folding the Seatback........................................ 1-9
Footnotes................................................6-6, 6-13
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-44
Gasoline Octane........................................... 5-5
Gasoline Specifications.................................. 5-5
Low Warning Light.......................................3-45
System Inspection.......................................6-22Fuses
Fuses and Circuit Breakers...........................5-79
Windshield Wiper.........................................5-78
G
Gage
Engine Coolant Temperature.........................3-39
Fuel..........................................................3-44
Speedometer..............................................3-32
Tachometer.................................................3-32
Gasoline
Octane........................................................ 5-5
Specifications............................................... 5-5
Glove Box.....................................................2-33
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamp
Aiming.......................................................5-40
Headlamp High/Low-Beam Changer.................... 3-8
Headlamp Wiring............................................5-78
6

Headlamps....................................................5-41
Bulb Replacement.......................................5-41
Front Turn Signal Lamps..............................5-43
Halogen Bulbs............................................5-41
Heated Seats................................................... 1-5
Height Adjuster, Driver Seat............................... 1-3
Highbeam On Light.........................................3-43
Highway Hypnosis...........................................4-22
Hill and Mountain Roads..................................4-22
Hold Mode.....................................................2-25
Hold Mode Functions......................................2-25
Hold Mode Light.............................................3-38
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How the System Alarm is Activated...................2-16
How to Add Coolant to the Coolant
Surge Tank.................................................5-26
How to Check................................................5-53
How to Check Power Steering Fluid..................5-30
How to Detect a Tamper Condition....................2-16
How to Inspect the Engine Air Cleaner/Filter.......5-18
How to Turn Off the System Alarm....................2-16
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-16
Hydroplaning..................................................4-18I
If No Steam Is Coming From Your Engine..........5-23
If Steam Is Coming From Your Engine...............5-22
If the Light Is Flashing.....................................3-40
If the Light Is On Steady.................................3-40
If You Are Caught in a Blizzard.........................4-26
If You Are Stuck in Sand, Mud, Ice or Snow.......4-28
Ignition Positions.............................................2-19
Ignition Transaxle Lock Check..........................6-21
Immobilizer....................................................2-17
Immobilizer Operation......................................2-17
Infants and Young Children, Restraints...............1-30
Inflation - Tire Pressure...................................5-53
Inspection
Brake System.............................................6-23
Engine Cooling System................................6-23
Exhaust System..........................................6-22
Fuel System...............................................6-22
Part C - Periodic Maintenance.......................6-22
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-22
Throttle System...........................................6-23
Instrument Panel
Cluster.......................................................3-31
Overview..................................................... 3-4
Instrument Panel Brightness.............................3-15
Instrument Panel Fuse Block............................5-79
Interior Lamps................................................3-15
7

J
Jump Starting.................................................5-36
K
Key Lock Cylinders Service..............................6-19
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
LLamps
Exterior......................................................3-13
Interior.......................................................3-15
Lamps On Reminder.......................................3-14
Lap-Shoulder Belt...................................1-16, 1-25
LATCH System
Child Restraints...........................................1-40
Securing a Child Restraint Designed for
the LATCH System...................................1-43
Leaving Your Vehicle.......................................2-11
Leaving Your Vehicle With the Engine Running . . . 2-27
Light
Air Bag Readiness.......................................3-33
Anti-Lock Brake System Warning...................3-36
Brake System Warning.................................3-35Light (cont.)
Charging System.........................................3-34
Cruise Control.............................................3-43
Daytime Running Lamps Indicator..................3-44
Door Ajar...................................................3-47
Highbeam On.............................................3-43
Hold Mode.................................................3-38
Low Fuel Warning.......................................3-45
Malfunction Indicator....................................3-39
Oil Pressure...............................................3-42
Safety Belt Reminder...................................3-33
Safety Belt Reminder Tone...........................3-33
Speed Sensitive Power Steering (SSPS)
Warning Light..........................................3-36
TCS Warning Light......................................3-37
Traction Control System Active......................3-38
Traction Control System (TCS) Warning..........3-37
Trunk Ajar..................................................3-47
Loading Your Vehicle.......................................4-31
Lockout Protection..........................................2-10
Locks
Central Door Unlocking System....................... 2-8
Door........................................................... 2-7
Leaving Your Vehicle....................................2-11
Lockout Protection.......................................2-10
Power Door.................................................. 2-9
Rear Door Security Locks.............................2-10
8