2004 PONTIAC GRAND PRIX Tires 5-73

Service............................................................5-3
Doing Your Own Service Work.........................5-3
Adding Equipment to the Outside
of Your Vehicle...........................................5-4
Fuel................................................................5-4
Gasoline Octane............................................5-4
Gasoline Speci®cations....................................5-5
California Fuel...............................................5-5
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-16
Supercharger Oil..........................................5-21
Engine Air Cleaner/Filter................................5-22
Automatic Transaxle Fluid..............................5-24
Engine Coolant.............................................5-26
Radiator Pressure Cap..................................5-29
Engine Overheating.......................................5-29
Cooling System............................................5-32
Power Steering Fluid.....................................5-42
Windshield Washer Fluid................................5-43Brakes........................................................5-45
Battery........................................................5-48
Jump Starting...............................................5-49
Headlamp Aiming...........................................5-56
Bulb Replacement..........................................5-59
Halogen Bulbs..............................................5-59
Headlamps and Sidemarker Lamps.................5-60
Front Turn Signal, Parking and
Fog Lamps...............................................5-62
Center High-Mounted Stoplamp (CHMSL).........5-64
Taillamps, Turn Signal, and Stoplamps............5-64
Back-Up Lamps............................................5-65
Replacement Bulbs.......................................5-66
Windshield Wiper Blade Replacement..............5-67
Tires..............................................................5-68
In¯ation -- Tire Pressure................................5-69
Tire Pressure Monitor System.........................5-70
Tire Inspection and Rotation...........................5-71
When It Is Time for New Tires.......................5-72
Buying New Tires.........................................5-73
Uniform Tire Quality Grading..........................5-74
Wheel Alignment and Tire Balance..................5-75
Wheel Replacement......................................5-75
Tire Chains..................................................5-77
Section 5 Service and Appearance Care
5-1

Buying New Tires
To ®nd out what kind and size of tires you need, look at
the Tire-Loading Information label.
The tires installed on your vehicle when it was new had
a Tire Performance Criteria Speci®cation (TPC Spec)
number on each tire's sidewall. When you get new tires,
get ones with that same TPC Spec number. That way
your vehicle will continue to have tires that are designed
to give proper endurance, handling, speed rating,
traction, ride and other things during normal service on
your vehicle. If your tires have an all-season tread
design, the TPC number will be followed by an ªMSº
(for mud and snow).
If you ever replace your tires with those not having a
TPC Spec number, make sure they are the same size,
load range, speed rating and construction type (bias,
bias-belted or radial) as your original tires.{CAUTION:
Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes
or types (radial and bias-belted tires), the
vehicle may not handle properly, and you
could have a crash. Using tires of different
sizes may also cause damage to your vehicle.
Be sure to use the same size and type tires on
all wheels. It's all right to drive with your
compact spare temporarily, it was developed
for use on your vehicle. See ªCompact Spare
Tireº in the index.
{CAUTION:
If you use bias-ply tires on your vehicle, the
wheel rim ¯anges could develop cracks after
many miles of driving. A tire and/or wheel
could fail suddenly, causing a crash. Use only
radial-ply tires with the wheels on your vehicle.
5-73

Automatic Transaxle........................................5-24
Fluid..........................................................5-24
Operation...................................................2-22
Automatic Transaxle Check..............................6-11
Automatic Transaxle Shift Lock Control
System Check.............................................6-12
B
Backglass Antenna........................................3-132
Backing Up....................................................4-41
Base Level DIC..............................................3-45
Battery..........................................................5-48
Battery Replacement......................................... 2-6
Battery Run-Down Protection............................3-19
Before Leaving on a Long Trip.........................4-25
Body Lubrication Service..................................6-11
Brake
Parking......................................................2-27
System Inspection.......................................6-15
System Warning Light..................................3-36
Brake Fluid....................................................5-45
Brake Wear...................................................5-47
Brakes..........................................................5-45
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-18Bulb Replacement...........................................5-59
Back-Up Lamps...........................................5-65
Center High-Mounted Stoplamp (CHMSL)........5-64
Front Turn Signal, Parking and Fog Lamps.....5-62
Halogen Bulbs............................................5-59
Headlamp Aiming........................................5-56
Headlamps and Sidemarker Lamps................5-60
Replacement Bulbs......................................5-66
Taillamps, Turn Signal, and Stoplamps............5-64
Buying New Tires...........................................5-73
C
California Fuel.................................................. 5-5
Canada ± Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Speci®cations..........................5-104
Carbon Monoxide...................4-28, 4-37, 2-10, 2-31
Care of
Safety Belts................................................5-93
Your Cassette Tape Player..........................3-130
Your CD Player.........................................3-131
Your CDs .................................................3-131
Care of the HUD............................................3-22
Cassette Tape Messages...............................3-110
Cassette Tape Player Service...........................6-10
CD Adapter Kits............................................3-111
Center Console Storage Area...........................2-37
2

Throttle System Inspection...............................6-15
Tilt Wheel........................................................ 3-5
Tire In¯ation Check.........................................6-10
Tires.............................................................5-68
Buying New Tires........................................5-73
Chains.......................................................5-77
Changing a Flat Tire....................................5-78
Compact Spare Tire.....................................5-89
If a Tire Goes Flat.......................................5-78
In¯ation -- Tire Pressure...............................5-69
Inspection and Rotation................................5-71
Pressure Monitor System..............................5-70
Uniform Tire Quality Grading.........................5-74
Wheel Alignment and Tire Balance.................5-75
Wheel Replacement.....................................5-75
When It Is Time for New Tires......................5-72
To Use the Engine Coolant Heater....................2-21
Top Strap......................................................1-39
Top Strap Anchor Location...............................1-40
Torque Lock...................................................2-29
Total Weight on Your Vehicle's Tires..................4-39
Towing
Recreational Vehicle.....................................4-33
Towing a Trailer..........................................4-37
Your Vehicle...............................................4-33
Traction
Control System (TCS)..................................4-10
Control System Warning Light.......................3-38
Enhanced Traction System (ETS)...................4-11Traction (cont.)
Enhanced Traction System (ETS)
Warning Light..........................................3-38
Stabilitrak
ž& Plus System.............................4-13
TRACTION CONTROL ACTIVE.........................3-87
TRACTION CONTROL OFF.............................3-87
Trailer Brakes.................................................4-40
Transaxle
Fluid, Automatic...........................................5-24
Transaxle Operation, Automatic.........................2-22
Transmission
Up-Shift Light..............................................3-35
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-10
Transportation Options...................................... 7-8
Trunk............................................................2-10
Trunk Assist Handle........................................2-11
Trunk Lock....................................................2-10
Turn and Lane-Change Signals.........................3-14
TURN SIGNAL ON.........................................3-87
Turn Signals When Towing a Trailer..................4-42
U
Underbody Flushing Service.............................6-13
Underhood Fuse Block...................................5-102
Understanding Radio Reception.......................3-130
Uniform Tire Quality Grading............................5-74
14