brake CHEVROLET IMPALA 2004 8.G Repair Manual

At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-26if necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench dealer for service.
Automatic Transaxle Shift Lock Control
System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-26if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the ON position,
but do not start the engine. Without applying the
regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift
lever moves out of PARK (P), contact your
GM Goodwrench dealer for service.
6-10

Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to OFF in each shift lever position.
The key should turn to OFF only when the shift lever
is in PARK (P).
The key should come out only in OFF.
Contact your GM Goodwrench dealer if service is
required.
Parking Brake and Automatic Transaxle
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 transaxle 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.
Contact your GM Goodwrench dealer if service is
required.
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.
6-11

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 5-18.
Engine Coolant50/50 mixture of clean, drinkable
water and use only
DEX-COOL
®Coolant. SeeEngine
Coolant on page 5-29.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
Washer SolventGM Optikleen
®Washer Solvent.
Usage Fluid/Lubricant
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Automatic
TransaxleDEXRON
®-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
SuperchargerSupercharger Oil
(GM Part No. U.S. 12345982, in
Canada 10953513). See
Supercharger Oil on page 5-24.
Hood Latch
Assembly,
Secondary
Latch, Pivots,
Spring
Anchor and
Release PawlLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293, in
Canada 992723) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood and Door
HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Weatherstrip
ConditioningDielectric Silicone Grease
(GM Part No. U.S. 12345579, in
Canada 992887).
6-12

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 thanwith 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
condentiality is to be maintained and need is
shown, or
share summary data which is not tied to a specic
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

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 specications for GM
transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE: $50.00
Service Bulletins
Service Bulletins give technical service information
needed to knowledgeably service General Motors cars
and trucks. Each bulletin contains instructions to
assist in the diagnosis and service of your vehicle.
In Canada, information pertaining to Product
Service Bulletins can be obtained by contacting your
General Motors dealer or by calling 1-800-GM-DRIVE
(1-800-463-7483).
7-12

A
Accessory Power Outlets.................................3-19
Adding Washer Fluid.......................................5-46
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-103
Adjusting the Speakers
(Balance/Fade)............................3-60, 3-71, 3-82
Air Bag
Readiness Light..........................................3-32
Air Bag Systems.............................................1-51
How Does an Air Bag Restrain?....................1-57
Servicing Your Air Bag-Equipped Vehicle.........1-60
What Makes an Air Bag Inate?....................1-57
What Will You See After an Air Bag Inates?......1-58
When Should an Air Bag Inate?...................1-56
Where Are the Air Bags?..............................1-54
Air Cleaner/Filter, Engine.................................5-25
Airbag Sensing and Diagnostic Module (SDM)....7-10
ALARM (Content Theft Operation).....................2-49
AM ...............................................................3-94
Antenna, Backglass.........................................3-96
Antenna, XMâ„¢ Satellite Radio Antenna System.....3-97
Anti-lock Brake System (ABS)............................ 4-6
Anti-Lock Brake, System Warning Light..............3-35Appearance Care............................................5-94
Care of Safety Belts....................................5-97
Chemical Paint Spotting..............................5-100
Cleaning the Inside of Your Vehicle................5-94
Cleaning the Outside of Your Vehicle..............5-97
Finish Damage..........................................5-100
Sheet Metal Damage...................................5-99
Underbody Maintenance.............................5-100
Vehicle Care/Appearance Materials...............5-101
Weatherstrips..............................................5-97
Arming with the Power Lock Switch...................2-15
Arming with the Remote Keyless Entry
Transmitter.................................................2-16
Ashtrays........................................................3-20
Audio System(s).............................................3-56
Audio Steering Wheel Controls......................3-93
Backglass Antenna......................................3-96
Care of Your Cassette Tape Player................3-94
Care of Your CD Player...............................3-96
Care of Your CDs........................................3-96
Chime Level Adjustment...............................3-97
Radio with Cassette.....................................3-57
Radio with Cassette and CD.........................3-78
Radio with CD............................................3-68
Setting the Time..........................................3-56
1

Audio System(s) (cont.)
Theft-Deterrent Feature................................3-92
Understanding Radio Reception.....................3-94
Vehicle Customization Settings......................3-97
XMâ„¢ Satellite Radio Antenna System............3-97
AUTOLOCK (Automatic Door Lock and Unlock) . . . 2-46
Automatic Transaxle
Fluid..........................................................5-26
Operation...................................................2-22
B
Backglass Antenna..........................................3-96
Backing Up....................................................4-41
Battery..........................................................5-50
Battery Replacement......................................... 2-7
Battery Rundown Protection.............................3-18
Battery Warning Message................................3-45
Before Leaving on a Long Trip.........................4-22
Brake
Low Fluid Warning Message.........................3-51
Parking......................................................2-26
System Warning Light..................................3-33
Brake Fluid....................................................5-47
Brake Wear...................................................5-49
Brakes..........................................................5-47
Braking........................................................... 4-6Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-17
Bulb Replacement...........................................5-58
Back-Up Lamps...........................................5-62
Halogen Bulbs............................................5-58
Headlamp Aiming........................................5-58
Headlamps, Front Turn Signal,
and Parking Lamps..................................5-59
Replacement Bulbs......................................5-62
Taillamps, Turn Signal, Stoplamps and
Sidemarker Lamps...................................5-61
Buying New Tires...........................................5-76
C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specications..........................5-110
Carbon Monoxide...................4-25, 4-37, 2-11, 2-31
Care of
Safety Belts................................................5-97
Your Cassette Tape Player............................3-94
Your CD Player...........................................3-96
Your CDs ...................................................3-96
2

I
If No Steam Is Coming From Your Engine..........5-34
If Steam Is Coming From Your Engine...............5-33
If the Light Is Flashing.....................................3-39
If the Light Is on Steady..................................3-39
If You Are Caught in a Blizzard.........................4-27
If You Are Stuck in Sand, Mud, Ice or Snow.......4-29
If You Do Decide To Pull A Trailer.....................4-38
Ignition Positions.............................................2-17
Illumination on Remote Activation........................ 2-6
Infants and Young Children, Restraints...............1-33
Ination - Tire Pressure...................................5-72
Instrument Panel
Cluster.......................................................3-27
Overview..................................................... 3-4
Instrument Panel Brightness.............................3-17
Interior Lamps................................................3-17
J
Jump Starting.................................................5-51
K
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-14
Interior.......................................................3-17
Lap Belt........................................................1-23
Lap-Shoulder Belt...................................1-15, 1-24
LATCH System
Child Restraints...........................................1-44
Securing a Child Restraint Designed for the
LATCH System........................................1-46
Leaving Your Vehicle.......................................2-10
Leaving Your Vehicle With the Engine Running . . . 2-29
Light
Air Bag Readiness.......................................3-32
Anti-Lock Brake System Warning...................3-35
Brake System Warning.................................3-33
Cruise Control.............................................3-41
Malfunction Indicator....................................3-37
Safety Belt Reminder...................................3-31
TCS Warning Light......................................3-35
Traction Control System (TCS) Warning..........3-35
Loading Your Vehicle.......................................4-32
Lockout Protection..........................................2-10
Locks
Door........................................................... 2-8
Leaving Your Vehicle....................................2-10
8

Locks (cont.)
Lockout Protection.......................................2-10
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Loss of Control...............................................4-14
Low Brake Fluid Warning Message....................3-51
Low Engine Oil Level Message.........................3-47
Low Fuel Warning Message.............................3-50
Low Oil Pressure Message...............................3-46
Low Tire Message..........................................3-48
Low Washer Fluid Warning Message.................3-50
LT DELAY (Delayed Headlamp Illumination)........2-46
Lumbar
Manual Controls............................................ 1-3
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month.................................. 6-9
At Least Once a Year..................................6-10
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-15
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-13Maintenance Schedule (cont.)
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using Your................................................... 6-2
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-43
Making Turns.................................................4-42
Malfunction Indicator Light................................3-37
Manual Lumbar Controls.................................... 1-3
Manual Operation...........................................3-21
Manual Seats................................................... 1-2
Matching Transmitter(s) to Your Vehicle............... 2-6
Message
Battery Warning..........................................3-45
Center.......................................................3-43
Change Engine Oil......................................3-47
Door Ajar Warning.......................................3-48
Highbeam Out Warning................................3-52
Hot Coolant Temperature Warning..................3-45
Low Brake Fluid Warning..............................3-51
Low Engine Oil Level...................................3-47
Low Fuel Warning.......................................3-50
Low Oil Pressure.........................................3-46
Low Tire .....................................................3-48
Low Washer Fluid Warning...........................3-50
Security.....................................................3-49
9

P
Parade Dimming.............................................3-18
Park (P)
Shifting Into................................................2-27
Shifting Out of............................................2-30
Parking
Brake........................................................2-26
Over Things That Burn.................................2-30
Parking on Hills..............................................4-42
Passenger Compartment Air Filter.....................3-25
Passenger’s Side Instrument Panel Fuse Block....5-106
Passing.................................................4-13, 4-41
Passlock
®......................................................2-16
Plan Ahead When Possible................................ 7-8
Playing a Cassette Tape..........................3-65, 3-87
Playing a CD.........................................3-76, 3-90
Playing the Radio...........................3-58, 3-69, 3-79
Power
Accessory Outlets........................................3-19
Door Locks.................................................. 2-9
Electrical System.......................................5-103
Six-Way Seats.............................................. 1-3
Steering Fluid.............................................5-45
Windows....................................................2-14
Power Steering...............................................4-10
Programmable Automatic Door Locks.................2-10
Programmable Modes..............................2-10, 2-44
Programming the HomeLink
®Transmitter...........2-38
Q
Questions and Answers About Safety Belts.........1-13
R
Radiator Pressure Cap....................................5-32
Radio Data System (RDS)...............3-57, 3-68, 3-78
Radio Messages.............................3-62, 3-73, 3-84
Radios..........................................................3-56
Care of Your Cassette Tape Player................3-94
Care of Your CD Player...............................3-96
Care of Your CDs........................................3-96
Radio with Cassette.....................................3-57
Radio with Cassette and CD.........................3-78
Radio with CD............................................3-68
Setting the Time..........................................3-56
Theft-Deterrent............................................3-92
Understanding Reception..............................3-94
RDS Messages..............................3-61, 3-72, 3-83
Reading Lamps..............................................3-18
Rear Safety Belt Comfort Guides......................1-28
Rear Seat Passenger Positions.........................1-24
Rear Seat Passengers, Safety Belts..................1-24
Rear Storage Area..........................................2-42
Rear Window Defogger....................................3-23
Rearview Mirror, Automatic Dimming..................2-34
11