height PONTIAC GTO 2004 User Guide

Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire pressing
outward on each square inch of the tire. Air pressure
is expressed in pounds per square inch (psi) or
kilopascal (kPa).
Accessory Weight:This means the combined weight
of optional accessories. Some examples of optional
accessories are, automatic transmission, power steering,
power brakes, power windows, power seats, and air
conditioning.
Aspect Ratio:The relationship of a tire’s height to its
width.
Belt:A rubber coated layer of cords that is located
between the plies and the tread. Cords may be made
from steel or other reinforcing materials.
Bead:The tire bead contains steel wires that hold the
tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies are
laid at alternate angles, less than 90 degrees to the
centerline of the tread.
Cold Ination Pressure:The amount of air pressure in
a tire, measured in pounds per square inch (psi) or
kilopascal (kPa), before a tire has built up heat
from driving. SeeInflation - Tire Pressure on page 5-58.Curb Weight:This means the weight of a motor
vehicle with standard and optional equipment including
the maximum capacity of fuel, oil and coolant, but
without passengers and cargo.
DOT Markings:A code molded into the sidewall of a
tire signifying that the tire is in compliance with the U.S.
Department of Transportation motor vehicle safety
standards. The DOT code includes the Tire Identification
Number (TIN), an alphanumeric designator which can
also identify the tire manufacturer, production plant,
brand and date of production.
GVWR:Gross Vehicle Weight Rating, seeLoading
Your Vehicle on page 4-30.
GAWR FRT:Gross Axle Weight Rating for the front
axle, seeLoading Your Vehicle on page 4-30.
GAWR RR:Gross Axle Weight Rating for the rear axle,
seeLoading Your Vehicle on page 4-30.
Intended Outboard Sidewall:The side of an
asymmetrical tire that must always face outward when
mounted on a vehicle.
Kilopascal (kPa):The metric unit for air pressure.
There are 6.9 kPa’s to one psi.
Light Truck (LT-Metric) Tire:A tire used on light duty
trucks and some multipurpose passenger vehicles.
5-56

Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts should be replaced.
If the wheel leaks air, replace it (except some
aluminum wheels, which can sometimes be repaired).
See your dealer if any of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM
original equipment parts. This way, you will be sure to
have the right wheel, wheel bolts and wheel nuts
for your vehicle.{CAUTION:
Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-71for more
information.
5-68

S
Safety Belt
Pretensioners..............................................1-25
Reminder Light............................................3-25
Safety Belts
Care of......................................................5-81
Driver Position............................................1-12
How to Wear Safety Belts Properly................1-12
Questions and Answers About Safety Belts.....1-10
Rear Safety Belt Comfort Guides for Children
and Small Adults......................................1-23
Rear Seat Passengers.................................1-20
Right Front Passenger Position......................1-20
Safety Belt Extender....................................1-25
Safety Belt Use During Pregnancy.................1-19
Safety Belts Are for Everyone......................... 1-6
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seatback Latches............................................. 1-4
Seats
Head Restraints............................................ 1-4
Manual Lumbar............................................. 1-2
Power Seats................................................. 1-2
Reclining Seatbacks...................................... 1-3
Seatback Latches.......................................... 1-4Securing a Child Restraint
Designed for the LATCH System...................1-40
Rear Seat Position......................................1-40
Right Front Seat Position..............................1-43
Security Light.................................................3-33
Security Release Procedure.............................3-52
Security While You Travel.................................. 7-5
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-5
Doing Your Own Work................................... 5-4
Engine Soon Light.......................................3-29
Publications Ordering Information...................7-11
Vehicle Soon Light.......................................3-34
Service Bulletins.............................................7-11
Service Manuals.............................................7-11
Setting Preset Stations....................................3-44
Setting the Time.............................................3-42
Setting the Tone (Bass/Treble)..........................3-45
Sheet Metal Damage.......................................5-84
Shift Lock Release..........................................2-26
Shift Speeds..................................................2-22
Shifting Into Park (P).......................................2-24
Shifting Out of Park (P)...................................2-26
Shoulder Belt Height Adjuster...........................1-14
Skidding........................................................4-14
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