warning light PONTIAC GRAND PRIX 2008 Service Manual

Brakes
Brake Fluid
The brake master cylinder
reservoir is lled with
DOT-3 brake uid. See
Engine Compartment
Overview on page 5-12for
the location of the
reservoir.
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 hydraulic system. If it is, you
should have the brake hydraulic system xed, since a
leak means that sooner or later the brakes will not
work well.It is not a good idea to top off the brake uid. Adding
brake uid will not correct a leak. If uid is added when
the linings are worn, there will be too much uid when
new brake linings are installed. Add or remove brake
uid, as necessary, only when work is done on the brake
hydraulic system.
{CAUTION:
If your vehicle has 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 the brake uid falls to a low level, the brake
warning light comes on. SeeBrake System Warning
Light on page 3-45.
5-41

Brake Wear
Your vehicle has 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 can 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 the brakes will not 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 can cause a brake
squeal when the brakes are rst applied or lightly
applied. This does not mean something is wrong with
the 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 torque specications in
Capacities and Specifications on page 5-128.
Brake linings should always be replaced as complete
axle sets.
5-43

Federal Communications Commission
(FCC) and Industry and Science
Canada
The Tire Pressure Monitor System (TPMS) operates on
a radio frequency and complies with Part 15 of the
FCC Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
The Tire Pressure Monitor System (TPMS) operates on
a radio frequency and complies with RSS-210 of
Industry and Science Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
Tire Pressure Monitor Operation
The Tire Pressure Monitor System (TPMS) is designed
to warn the driver when a low tire pressure condition
exists. TPMS sensors are mounted onto each tire and
wheel assembly, excluding the spare tire and wheel
assembly. The TPMS sensors monitor the air pressure in
the vehicle’s tires and transmits the tire pressure readings
to a receiver located in the vehicle.
When a low tire pressure
condition is detected, the
TPMS illuminates the low
tire pressure warning light,
located in the instrument
panel cluster.
5-72

At the same time a message to check the pressure in a
specic tire appears on the Driver Information center
(DIC) display. The low tire pressure warning light and
the DIC warning message come on at each ignition cycle
until the tires are inated to the correct ination pressure.
Using the DIC buttons, tire pressure readings can be
viewed by the driver. For additional information and
details about the DIC operation and displays seeDIC
Operation and Displays (Uplevel DIC with Trip Computer)
on page 3-55orDIC Operation and Displays (Base Level
DIC) on page 3-62andDIC Warnings and Messages on
page 3-67.
The low tire pressure warning light may come on in cool
weather when the vehicle is rst started, and then turn
off as you start to drive. This could be an early indicator
that the air pressure in the tire(s) are getting low and
need to be inated to the proper pressure.A tire and Loading Information label, attached to your
vehicle, shows the size of your vehicle’s original
equipment tires and the correct ination pressure for your
vehicle’s tires when they are cold. SeeLoading Your
Vehicle on page 4-22, for an example of the Tire and
Loading Information label and its location on your vehicle.
Also seeInflation - Tire Pressure on page 5-69.
Your vehicle’s TPMS system can warn you about a low
tire pressure condition but it does not replace normal
tire maintenance. SeeTire Inspection and Rotation on
page 5-75andTires on page 5-62.
Your vehicle, when new, may have included a
factory-installed Tire Inator Kit. This kit uses a GM
approved liquid tire sealant. SeeTire Sealant and
Compressor Kit (GXP) on page 5-86.
Notice:Using non-approved tire sealants could
damage the Tire Pressure Monitor System (TPMS)
sensors. TPMS sensor damage caused by using
an incorrect tire sealant is not covered by the
vehicle warranty. Always use the GM approved tire
sealant available through your dealer/retailer.
5-73

TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of the
TPMS sensors are missing or inoperable. When the
system detects a malfunction, the low tire warning light
ashes for about one minute and then stays on for the
remainder of the ignition cycle. A DIC warning message
is also displayed. The low tire warning light and DIC
warning message come on at each ignition cycle until the
problem is corrected. Some of the conditions that can
cause the malfunction light and DIC message to
come on are:
One of the road tires has been replaced with the
spare tire and wheel. The spare, if your vehicle has
one, does not have a TPMS sensor. The TPMS
malfunction light and DIC message should go off
once you re-install the road tire containing the
TPMS sensor.
The TPMS sensor matching process was started but
not completed or not completed successfully after
rotating the vehicle’s tires. The DIC message and
TPMS malfunction light should go off once the TPMS
sensor matching process is performed successfully.
See “TPMS Sensor Matching Process” later in this
section.
One or more TPMS sensors are missing or
damaged. The DIC message and the TPMS
malfunction light should go off when the TPMS
sensors are installed and the sensor matching
process is performed successfully. See your
dealer/retailer for service.
Replacement tires or wheels do not match your
vehicle’s original equipment tires or wheels. Tire and
wheels other than those recommended for your
vehicle could prevent the TPMS from functioning
properly. SeeBuying New Tires on page 5-78.
Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMS
could cause the TPMS sensors to malfunction.
If the TPMS is not functioning it cannot detect or signal
a low tire condition. See your dealer/retailer for service if
the TPMS malfunction light and DIC message comes on
and stays on.
TPMS Sensor Matching Process
Each TPMS sensor has a unique identication code.
Any time you replace one or more of the TPMS sensors
or rotate the vehicle’s tires, the identication codes need
to be matched to the new tire/wheel position. The sensors
are matched, to the tire/wheel positions, in the following
order: driver side front tire, passenger side front tire,
passenger side rear tire, and driver side rear tire using a
TPMS diagnostic tool. See your dealer for service.
The TPMS sensors may also be matched to each
tire/wheel position by increasing or decreasing the tire’s
air pressure. When increasing the tire’s pressure, do not
exceed the maximum ination pressure indicated on the
tire’s sidewall. To decrease the tire’s air-pressure use the
pointed end of the valve cap, a pencil-style air pressure
gage, or a key.
5-74

Fuse Usage
RAP Retained Accessory Power
SUN ROOF Sunroof
CRUISE SW Cruise Switch
PK LP Parking Lamps
RR DEFOG Rear Window Defogger
DR LK/TRUNK Door Lock/Trunk
ONSTAR/ALDL Onstar
®/Diagnostic Link
CANISTER Fuel Tank Solenoid Canister
PK LAMPS Parking Lamps
RADIO/AMP Radio Amplier
RFA/MODRemote Function Activator (Remote
Keyless Entry)
DISPLAYSInstrument Panel Displays/Head-Up
Display (HUD), Driver Information
Center (DIC)
Fuse Usage
INT LIGHT Interior Lamps
HVAC Climate Controls
CHMSL/BKUPCenter High Mounted Stop
Lamp/Back-Up Lamps
PWR WDO Power Windows
SPRING
COIL 2Steering Wheel Control Switches
PWR SEAT Power Seat
TURN/HAZTurn Signals/Hazard Warning
Lamps
PWR MIRS Power Mirrors
HTD SEAT Heated Seat
To reinstall the end panel, position the lower section
with the edge of the instrument panel, and press the
sides of the panel until it snaps into place.
5-123

A
Accessories and Modications............................ 5-3
Adding Equipment to Your Airbag-Equipped
Vehicle.......................................................1-65
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-120
Air Cleaner/Filter, Engine.................................5-20
Air Conditioning......................................3-28, 3-32
Airbag
Passenger Status Indicator...........................3-43
Readiness Light..........................................3-42
Airbag System................................................1-52
What Will You See After an Airbag Inates?....1-58
When Should an Airbag Inate?....................1-57
Where Are the Airbags?...............................1-55
Airbag Systems
Adding Equipment to Your Airbag-Equipped
Vehicle...................................................1-65
How Does an Airbag Restrain?......................1-58
Passenger Sensing System...........................1-60
Servicing Your Airbag-Equipped Vehicle..........1-64
What Makes an Airbag Inate?......................1-58
Antenna, Backglass.......................................3-117
Antenna, XM™ Satellite Radio Antenna
System.....................................................3-118
Antilock Brake System (ABS)............................. 4-4
Anti-lock Brake, System Warning Light...............3-47Appearance Care
Aluminum Wheels......................................5-116
Care of Safety Belts...................................5-114
Chemical Paint Spotting..............................5-118
Cleaning Exterior Lamps/Lenses..................5-115
Fabric/Carpet............................................5-111
Finish Care...............................................5-115
Finish Damage..........................................5-117
Instrument Panel, Vinyl, and Other
Plastic Surfaces.....................................5-113
Interior Cleaning........................................5-109
Leather....................................................5-112
Sheet Metal Damage..................................5-117
Tires........................................................5-117
Ultra Lux Suede........................................5-113
Underbody Maintenance.............................5-117
Vehicle Care/Appearance Materials...............5-118
Washing Your Vehicle.................................5-114
Weatherstrips............................................5-114
Windshield and Wiper Blades......................5-116
Appointments, Scheduling Service....................... 7-9
Ashtray.........................................................3-27
Audio System.................................................3-94
Audio Steering Wheel Controls....................3-115
Backglass Antenna.....................................3-117
Chime Level Adjustment.............................3-118
Radio Reception........................................3-116
Setting the Clock.........................................3-95
1

Audio System (cont.)
Theft-Deterrent Feature...............................3-115
XM™ Satellite Radio Antenna System...........3-118
Audio System(s).............................................3-95
Automatic Transmission
Fluid..........................................................5-22
Operation...................................................2-28
B
Backglass Antenna........................................3-117
Battery..........................................................5-45
Electric Power Management..........................3-22
Exterior Lighting Battery Saver......................3-19
Run-Down Protection...................................3-22
Brake
Emergencies................................................ 4-5
Brakes..........................................................5-41
System Warning Light..................................3-45
Braking........................................................... 4-3
Braking in Emergencies..................................... 4-5
Break-In, New Vehicle.....................................2-23
Bulb Replacement...........................................5-54
Back-Up Lamps...........................................5-59
Front Turn Signal, Parking and Fog Lamps.....5-57
Halogen Bulbs............................................5-54
Headlamp Aiming........................................5-51Bulb Replacement (cont.)
License Plate Lamps....................................5-60
Replacement Bulbs......................................5-60
Taillamps, Turn Signal, and Stoplamps............5-58
Buying New Tires...........................................5-78
C
Calibration.....................................................3-65
California Fuel.................................................. 5-6
California Perchlorate Materials Requirements....... 5-4
California Proposition 65 Warning....................... 5-3
Canadian Owners................................................ ii
Capacities and Specications..........................5-128
Carbon Monoxide...................2-14, 2-36, 4-17, 4-29
Care of
Safety Belts..............................................5-114
CD, MP3 .....................................................3-109
Center Console Storage Area...........................2-44
Chains, Tire...................................................5-84
Check
Engine Light...............................................3-50
Checking Things Under the Hood......................5-10
Chemical Paint Spotting.................................5-118
Child Restraints
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-32
2

Child Restraints (cont.)
Lower Anchors and Tethers for Children..........1-39
Older Children.............................................1-29
Securing a Child Restraint in a Rear
Seat Position...........................................1-46
Securing a Child Restraint in the Right
Front Seat Position...................................1-49
Where to Put the Restraint...........................1-38
Chime Level Adjustment.................................3-118
Cigarette Lighter.............................................3-27
Cleaning
Aluminum Wheels......................................5-116
Exterior Lamps/Lenses................................5-115
Fabric/Carpet............................................5-111
Finish Care...............................................5-115
Instrument Panel, Vinyl, and Other
Plastic Surfaces.....................................5-113
Interior.....................................................5-109
Leather....................................................5-112
Tires........................................................5-117
Ultra Lux Suede........................................5-113
Underbody Maintenance.............................5-117
Washing Your Vehicle.................................5-114
Weatherstrips............................................5-114
Windshield and Wiper Blades......................5-116Climate Control System...................................3-28
Air Filter, Passenger Compartment.................3-36
Dual Automatic............................................3-32
Outlet Adjustment........................................3-36
Clock, Setting.................................................3-95
Collision Damage Repair..................................7-11
Compact Spare Tire......................................5-109
Compass.......................................................3-65
Compressor Kit, Tire Sealant............................5-86
Content Theft-Deterrent....................................2-18
Control of a Vehicle.......................................... 4-3
Convenience Net............................................2-44
Coolant
Engine Temperature Gage............................3-49
Engine Temperature Warning Light.................3-48
Heater, Engine............................................2-26
Cooling System..............................................5-30
Courtesy Lamps.............................................3-19
Cruise Control................................................3-12
Cruise Control Light........................................3-53
Cupholder(s)..................................................2-43
Customer Assistance Information
Courtesy Transportation.................................. 7-9
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-5
3

Customer Assistance Information (cont.)
Customer Assistance Offices........................... 7-5
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-6
Reporting Safety Defects to General Motors....7-14
Reporting Safety Defects to the
Canadian Government..............................7-14
Reporting Safety Defects to the
United States Government.........................7-14
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-15
D
Daytime Running Lamps..................................3-17
Defensive Driving............................................. 4-2
Delayed Entry Lighting.....................................3-20
Delayed Exit Lighting.......................................3-21
Delayed Locking.............................................2-11
DIC Compass.................................................3-65
Diesel
Running Out of Fuel....................................2-37
Disc, MP3....................................................3-109Doing Your Own Service Work........................... 5-4
Dome Lamp ...................................................3-20
Door
Delayed Locking..........................................2-11
Locks........................................................2-10
Power Door Locks.......................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-12
Driver Information Center (DIC).........................3-55
DIC Operation and Displays..................3-55, 3-62
DIC Vehicle Customization............................3-89
DIC Warnings and Messages........................3-67
Driving
At Night.....................................................4-14
Before a Long Trip......................................4-15
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Highway Hypnosis.......................................4-16
Hill and Mountain Roads..............................4-16
In Rain and on Wet Roads...........................4-14
Rocking Your Vehicle to Get it Out.................4-22
Winter........................................................4-17
Dual Automatic Climate Control System.............3-32
4