brake light CHEVROLET IMPALA 2003 8.G User Guide

There are only two reasons why the brake ¯uid level in
the reservoir might go down. The ®rst is that the
brake ¯uid goes down to an acceptable level during
normal brake lining wear. When new linings are put in,
the ¯uid level goes back up. The other reason is
that ¯uid is leaking out of the brake system. If it is, you
should have your brake system ®xed, since a leak
means that sooner or later your brakes won't work well,
or won't work at all.
So, it isn't a good idea to ªtop offº your brake ¯uid.
Adding brake ¯uid won't correct a leak. If you add ¯uid
when your linings are worn, then you'll have too
much ¯uid when you get new brake linings. You should
add (or remove) brake ¯uid, as necessary, only when
work is done on the brake hydraulic system.
{CAUTION:
If you have too much brake ¯uid, it can spill on
the engine. The ¯uid will burn if the engine is
hot enough. You or others could be burned,
and your vehicle could be damaged. Add brake
¯uid only when work is done on the brake
hydraulic system.When your brake ¯uid falls to a low level, your brake
warning light will come on. See
Brake System Warning
Light on page 3-34.
What to Add
When you do need brake ¯uid, use only DOT-3 brake
¯uid. Use new brake ¯uid from a sealed container
only. See
Part D: Recommended Fluids and Lubricants
on page 6-16.
Always clean the brake ¯uid reservoir cap and the area
around the cap before removing it. This will help
keep dirt from entering the reservoir.
{CAUTION:
With the wrong kind of ¯uid in your brake
system, your brakes may not work well, or
they may not even work at all. This could
cause a crash. Always use the proper brake
¯uid.
5-46

Notice:
·Using the wrong ¯uid can badly damage brake
system parts. For example, just a few drops of
mineral-based oil, such as engine oil, in your
brake system can damage brake system
parts so badly that they'll have to be replaced.
Don't let someone put in the wrong kind of ¯uid.
·If you spill brake ¯uid on your vehicle's painted
surfaces, the paint ®nish can be damaged. Be
careful not to spill brake ¯uid on your vehicle. If
you do, wash it off immediately. See
ªAppearance Careº in the Index.
Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that make
a high-pitched warning sound when the brake pads
are worn and new pads are needed. The sound
may come and go or be heard all the time your vehicle
is moving (except when you are pushing on the
brake pedal ®rmly).
{CAUTION:
The brake wear warning sound means that
soon your brakes won't work well. That could
lead to an accident. When you hear the brake
wear warning sound, have your vehicle
serviced.
Notice:Continuing to drive with worn-out brake
pads could result in costly brake repair.
Some driving conditions or climates may cause a brake
squeal when the brakes are ®rst applied or lightly
applied. This does not mean something is wrong with
your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in
the proper sequence to GM torque speci®cations.
Brake linings should always be replaced as complete
axle sets.
See
Brake System Inspection on page 6-15.
5-47

Notice:Ignoring these steps could result in costly
damage to your vehicle that wouldn't be covered
by your warranty.
Trying to start your vehicle by pushing or pulling it
won't work, and it could damage your vehicle.
Notice:If the other system isn't a 12-volt system
with a negative ground, both vehicles can be
damaged.
1. Check the other vehicle. It must have a 12±volt
battery with a negative ground system.
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren't touching
each other. If they are, it could cause a ground
connection you don't want. You wouldn't be able to
start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake ®rmly on both vehicles involved in
the jump start procedure. Put an automatic
transaxle in PARK (P) or a manual transaxle in
NEUTRAL before setting the parking brake.
Notice:If you leave your radio on, it could be badly
damaged. The repairs wouldn't be covered by
your warranty.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or in the accessory power outlets. Turn off
the radio and all lamps that aren't needed. This will
avoid sparks and help save both batteries. And it
could save your radio!
4. Open the hoods and locate the batteries. Find the
positive (+) and negative (-) terminal locations on
each vehicle.
You will not need to access your battery for jump
starting. Your vehicle has a remote positive (+) jump
starting terminal for that purpose. The remote
positive (+) terminal is located in the engine
compartment on the passenger's side of the vehicle,
next to the upper underhood fuse block. See
Engine Compartment Overview on page 5-12for
more information on location.
5-50

Fuses Usage
PCM/BCM/
CLSTRPowertrain Control Module, Body
Control Module, Cluster (Ignition 0)
WSWWindshield Wipers, Windshield
Washer
PCM (CRANK) Powertrain Control Module (Crank)
CIG/AUX Accommodated Device (Accessory)
BCM Body Control Module (Accessory)
SRS Supplemental Restraint System
ABS/PCM Anti-Lock Brake System, Powertrain
Control Module, Brake Switch,
Crank Relay, Canister Vent Solenoid
(Run, Crank)
STOPBrake Lamps, Body Control Module
(Run, Crank)
TURN SIGNAL Turn Signal Flashers
CRUISECruise Control Steering Column
Controls
AC/CRUISEHVAC Temp Door Motors & Module,
Cruise Control Module
A/C FAN HVAC Blower
STR COL Steering Wheel LightingFuses Usage
DR LKBody Control Module, Door Lock
Controls
PWR MIR Power Mirrors
CLSTR/BCMCluster, Body Control Module, Data
Link Connector (Battery)
LH HTD
ST/BCMDriver's Heated Seat, Body Control
Module, Battery Controlled Loads
Circuit
BreakersUsage
RETAINED
ACCESSORY
PWR BRKRPower Window, Sunroof Breaker
Relays Usage
HEADLAMP
RELAYHeadlamp Relay
RETAINED
ACCESSORY
PWR RELAYRetained Accessory Power Relay
5-97

Fuses Usage
RH HTD ST Passenger Heated Seat
PWR DROP Accommodated Device
B/U LP Back-Up Lamps
DIC/RKEDriver Information Center, Remote
Keyless Entry, HVAC
TRK/ROOF
BRPTrunk Lamps, Headliner Lamps
HVAC BLO HVAC Blower Relay
I/P BRP Instrument Panel Footwell Lamps
HTD MIR Heated Mirrors
BRK SW Brake Switch
HAZ SW Hazard Switch
REAR PRK LP Rear Parking Lamps
AUX PWR Accessory Power Outlet (Battery)
C/LTR Cigarette Lighter
RADIORadio, Radio Ampli®er, Remote
Digital Radio Receiver
FRT PARK LPFront Parking Lamps,
Instrumentation LightingRelays Usage
PARK LP
RELAYParking Lamps Relay
BACK UP LP
RELAYBack-up Lamps Relay
BATT RUN
DOWN
PROTECTION
RELAYBattery Run Down Protection Relay
REAR DEFOG
RELAYRear Defogger Relay, Heated Mirror
Relay
Circuit
BreakersUsage
POWER
SEATS BRKRPower Seat Circuit Breaker
REAR DEFOG
BRKRRear Defogger Breaker
5-99

A
Accessory Power Outlets.................................3-19
Adding Washer Fluid.......................................5-44
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-94
Adjusting the Speakers
(Balance/Fade)............................3-57, 3-67, 3-79
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 In¯ate?....................1-57
What Will You See After an Air
Bag In¯ates?...........................................1-58
When Should an Air Bag In¯ate?...................1-56
Where Are the Air Bags?..............................1-54
Air Bag .........................................................3-33
Readiness Light..........................................3-33
Air Cleaner/Filter, Engine.................................5-22
ALARM (Content Theft Operation).....................2-50
AM ...............................................................3-91
Antenna, Backglass.........................................3-93
Antenna, XMŸ Satellite Radio Antenna System . . 3-94
Anti-lock Brake System (ABS)............................ 4-6
Anti-Lock Brake, System Warning Light..............3-35Appearance Care............................................5-85
Care of Safety Belts....................................5-88
Chemical Paint Spotting...............................5-91
Cleaning the Inside of Your Vehicle................5-85
Cleaning the Outside of Your Vehicle..............5-88
Finish Damage............................................5-90
Sheet Metal Damage...................................5-90
Underbody Maintenance...............................5-91
Vehicle Care/Appearance Materials................5-91
Weatherstrips..............................................5-88
Arming with the Power Lock Switch...................2-16
Arming with the Remote Keyless
Entry Transmitter.........................................2-17
Ashtrays........................................................3-21
Audio System(s).............................................3-53
Audio Steering Wheel Controls......................3-90
Backglass Antenna......................................3-93
Care of Your Cassette Tape Player................3-91
Care of Your CD Player...............................3-92
Care of Your CDs........................................3-92
Chime Level Adjustment...............................3-94
Radio with Cassette and CD.........................3-75
Radio with Cassette.....................................3-54
Radio with CD............................................3-64
Setting the Time..........................................3-53
Theft-Deterrent Feature................................3-89
1

Audio System(s) (cont.)
Understanding Radio Reception.....................3-91
Vehicle Customization Settings......................3-94
XMŸ Satellite Radio Antenna System............3-94
AUTOLOCK (Automatic Door Lock
and Unlock)................................................2-47
Automatic Transaxle Check..............................6-11
Automatic Transaxle Shift Lock Control
System Check.............................................6-12
Automatic Transaxle........................................5-24
Fluid..........................................................5-24
Operation...................................................2-23
Auxiliary Power Connection (Power Drop)...........3-20
B
Backglass Antenna..........................................3-93
Backing Up....................................................4-38
Battery Replacement......................................... 2-7
Battery Rundown Protection.............................3-18
Battery Warning Message................................3-42
Battery..........................................................5-48
Before Leaving on a Long Trip.........................4-22
Body Lubrication Service..................................6-11
Brake Fluid....................................................5-45
Brake Wear...................................................5-47
Brake............................................................3-47
Low Fluid Warning Message.........................3-47
Parking......................................................2-27Brake (cont.)
System Inspection.......................................6-15
System Warning Light..................................3-34
Brakes..........................................................5-45
Braking in Emergencies..................................... 4-8
Braking........................................................... 4-6
Break-In, New Vehicle.....................................2-18
Bulb Replacement...........................................5-56
Back-Up Lamps...........................................5-59
Halogen Bulbs............................................5-56
Headlamp Aiming........................................5-55
Headlamps, Front Turn Signal, and
Parking Lamps.........................................5-56
Replacement Bulbs......................................5-59
Taillamps, Turn Signal, Stoplamps and
Sidemarker Lamps...................................5-58
Buying New Tires...........................................5-67
C
California Fuel.................................................. 5-6
Canada ± Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Speci®cations..........................5-103
Carbon Monoxide...................4-25, 4-34, 2-10, 2-31
Care of.........................................................5-88
Safety Belts................................................5-88
Your Cassette Tape Player............................3-91
2

H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamp High/Low-Beam Changer.................... 3-8
Headlamp Wiring............................................5-94
Headlamp......................................................5-55
Aiming.......................................................5-55
Headlamps....................................................5-56
Bulb Replacement.......................................5-56
Halogen Bulbs............................................5-56
Headlamps, Front Turn Signal,
and Parking Lamps..................................5-56
Heated Outside Mirrors....................................2-36
Heated Seats................................................... 1-4
Highbeam Out Warning Message......................3-48
Highway Hypnosis...........................................4-23
Hill and Mountain Roads..................................4-23
Hitches..........................................................4-37
HomeLink Transmitter, Programming..................2-39
HomeLink
žTransmitter....................................2-39
Hood............................................................5-10
Checking Things Under................................5-10
Release.....................................................5-10
Horn............................................................... 3-7
Hot Coolant Temperature Warning Message........3-42
How to Add Coolant to the Coolant
Recovery Tank............................................5-35
How to Add Coolant to the Radiator..................5-38
How to Add Fluid............................................5-26How to Check Power Steering Fluid..................5-43
How to Check........................................5-24, 5-62
How to Inspect the Engine Air
Cleaner/Filter..............................................5-22
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-14
Hydroplaning..................................................4-19
I
If No Steam Is Coming From Your Engine..........5-32
If Steam Is Coming From Your Engine...............5-31
If the Light Is Flashing.....................................3-38
If the Light Is on Steady..................................3-38
If You Are Stuck in Sand, Mud, Ice or Snow.......4-30
If You Do Decide To Pull A Trailer.....................4-35
If You're Caught in a Blizzard...........................4-28
Ignition Positions.............................................2-18
Ignition Transaxle Lock Check..........................6-13
Illumination on Remote Activation........................ 2-6
Infants and Young Children, Restraints...............1-33
In¯ation -- Tire Pressure..................................5-62
Inspection......................................................6-15
Brake System.............................................6-15
Engine Cooling System................................6-15
Exhaust System..........................................6-14
Fuel System...............................................6-15
Part C - Periodic Maintenance.......................6-14
Steering, Suspension and Front
Drive Axle Boot and Seal..........................6-14
7

Inspection (cont.)
Throttle System...........................................6-15
Instrument Panel Brightness.............................3-17
Instrument Panel.............................................3-29
Cluster.......................................................3-29
Overview..................................................... 3-4
Interior Lamps................................................3-17
J
Jump Stating..................................................5-49
Key Lock Cylinders Service..............................6-11
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Lamps...........................................................3-14
Exterior......................................................3-14
Interior.......................................................3-17
Lap Belt........................................................1-24
Lap-Shoulder Belt...................................1-15, 1-26
LATCH System...............................................1-43
Child Restraints...........................................1-43
Securing a Child Restraint Designed
for the LATCH System..............................1-45
Leaving Your Vehicle With the Engine Running . . . 2-29Leaving Your Vehicle.......................................2-10
Light.............................................................3-33
Air Bag Readiness.......................................3-33
Anti-Lock Brake System Warning...................3-35
Brake System Warning.................................3-34
Cruise Control.............................................3-39
Malfunction Indicator....................................3-37
Safety Belt Reminder...................................3-32
TCS Warning Light......................................3-35
Traction Control System (TCS) Warning..........3-35
Loading Your Vehicle.......................................4-32
Lockout Protection..........................................2-10
Locks............................................................. 2-8
Door........................................................... 2-8
Leaving Your Vehicle....................................2-10
Lockout Protection.......................................2-10
Power Door.................................................. 2-9
Programmable Automatic Door Locks............... 2-9
Loss of Control...............................................4-14
Low Brake Fluid Warning Message....................3-47
Low Engine Oil Level Message.........................3-43
Low Fuel Warning Message.............................3-47
Low Oil Pressure Message...............................3-43
Low Tire Message..........................................3-44
Low Washer Fluid Warning Message.................3-46
LT DELAY (Delayed Headlamp Illumination)........2-47
Lumbar........................................................... 1-3
Manual Controls............................................ 1-3
8

M
Maintenance, Normal Replacement Parts..........5-105
Maintenance Schedule.....................................6-10
At Each Fuel Fill.........................................6-10
At Least Once a Month................................6-10
At Least Once a Year..................................6-11
At Least Twice a Year..................................6-11
Brake System Inspection..............................6-15
Engine Cooling System Inspection.................6-15
Exhaust System Inspection...........................6-14
Fuel System Inspection................................6-15
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-10
Part C - Periodic MaintenanceInspections......6-14
Part D - Recommended Fluids and Lubricants . 6-16
Part E - Maintenance Record........................6-17
Scheduled Maintenance................................. 6-5
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-14
Throttle System Inspection............................6-15
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-40Making Turns.................................................4-38
Malfunction Indicator Light................................3-37
Manual Lumbar Controls.................................... 1-3
Manual Operation...........................................3-22
Manual Seats................................................... 1-2
Matching Transmitter(s) to Your Vehicle............... 2-6
Message.......................................................3-42
Battery Warning..........................................3-42
Center.......................................................3-40
Change Engine Oil......................................3-44
Door Ajar Warning.......................................3-45
Highbeam Out Warning................................3-48
Hot Coolant Temperature Warning..................3-42
Low Brake Fluid Warning..............................3-47
Low Engine Oil Level...................................3-43
Low Fuel Warning.......................................3-47
Low Oil Pressure.........................................3-43
Low Tire .....................................................3-44
Low Washer Fluid Warning...........................3-46
Security.....................................................3-46
Service Traction System Warning...................3-41
Service Vehicle Soon...................................3-48
Traction Active............................................3-41
Trunk Ajar Warning......................................3-45
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) ± Customer Assistance....................... 7-5
9