height CHEVROLET UPLANDER 2005 1.G User Guide

Page 370 of 460

Tire Size
The following illustration shows an example of a typical
passenger vehicle tire size.
(A) Passenger (P-Metric) Tire:The United States
version of a metric tire sizing system. The letter P as the
rst character in the tire size means a passenger
vehicle tire engineered to standards set by the U.S. Tire
and Rim Association.
(B) Tire Width:The three-digit number indicates the
tire section width in millimeters from sidewall to sidewall.(C) Aspect Ratio:A two-digit number that indicates the
tire height-to-width measurements. For example, if
the tire size aspect ratio is 60, as shown in item C of
the illustration, it would mean that the tire’s sidewall is
60 percent as high as it is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire. The letter
R means radial ply construction; the letter D means
diagonal or bias ply construction; and the letter B means
belted-bias ply construction.
(E) Rim Diameter:Diameter of the wheel in inches.
(F) Service Description:These characters represent
the load range and speed rating of the tire. The load
index represents the load carry capacity a tire is certied
to carry. The load index can range from 1 to 279. The
speed rating is the maximum speed a tire is certied
to carry a load. Speed ratings range from A to Z.
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Page 371 of 460

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 wrapped by
steel cords 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
kilopascals (kPa) before a tire has built up heat
from driving. SeeInation - Tire Pressure on page 5-57.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 (DOT) motor vehicle
safety standards. The DOT code includes the Tire
Identication 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 4-33.
GAWR FRT:Gross Axle Weight Rating for the front
axle, seeLoading Your Vehicle on page 4-33.
GAWR RR:Gross Axle Weight Rating for the rear axle,
seeLoading Your Vehicle on page 4-33.
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.
Light Truck (LT-Metric) Tire:A tire used on light duty
trucks and some multipurpose passenger vehicles.
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Page 379 of 460

Wheel Alignment and Tire Balance
The tires and wheels on your vehicle were aligned
and balanced carefully at the factory to give you the
longest tire life and best overall performance.
Adjustments to wheel alignment and tire balancing will
not be necessary on a regular basis. However, if
you notice unusual tire wear or your vehicle pulling to
one side or the other, the alignment may need to
be checked. If you notice your vehicle vibrating when
driving on a smooth road, your tires and wheels
may need to be rebalanced. See your dealer for proper
diagnosis.
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 5-68for more
information.
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Page 457 of 460

S
Safety Belt
Passenger Reminder Light............................3-34
Pretensioners..............................................1-41
Reminder Light............................................3-33
Safety Belts
Care of Safety Belts and Built-in Child
Restraint Harness.....................................5-89
Driver Position............................................1-27
How to Wear Safety Belts Properly................1-27
Questions and Answers About Safety Belts.....1-26
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-39
Rear Seat Passengers.................................1-36
Right Front Passenger Position......................1-36
Safety Belt Extender....................................1-42
Safety Belt Use During Pregnancy.................1-36
Safety Belts Are for Everyone.......................1-22
Shoulder Belt Height Adjuster........................1-35
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
Bucket Seats, Rear....................................... 1-9
Captain Chairs............................................1-14
Flip and Fold Feature.................................... 1-8
Head Restraints............................................ 1-7
Heated Seats............................................... 1-4Seats (cont.)
Manual........................................................ 1-3
Rear Seat Operation...................................... 1-7
Reclining Seatbacks...................................... 1-5
Six-Way Power Seats.................................... 1-4
Third Row Seat...........................................1-19
Second Row Center Console............................2-53
Secondary Latch System.................................5-78
Securing a Child Restraint
Designed for the LATCH System...................1-56
Rear Seat Position......................................1-56
Right Front Seat Position..............................1-58
Security Light.................................................3-43
Service........................................................... 5-3
Adding Equipment to the Outside of
Your Vehicle.............................................. 5-5
Doing Your Own Work................................... 5-4
Engine Soon Light.......................................3-40
Publications Ordering Information...................7-11
Servicing Your Airbag-Equipped Vehicle..............1-85
Setting the Time.............................................3-76
Sheet Metal Damage.......................................5-92
Shifting Into Park (P).......................................2-39
Shifting Out of Park (P)...................................2-40
Shoulder Belt Height Adjuster...........................1-35
Signals, Turn and Lane-Change.......................... 3-7
Sliding Door, Power........................................2-17
Sliding Doors, Dual.........................................2-14
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