2005 CHEVROLET ASTRO height

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.
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.
5-61

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 5-72for more
information.
5-70

Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-28
Running Your Engine While You Are Parked.......2-27
S
Safety Belt
Reminder Light............................................3-25
Safety Belts
Care of......................................................5-87
Center Rear Passenger Position....................1-34
Driver Position............................................1-23
How to Wear Safety Belts Properly................1-23
Questions and Answers About Safety Belts.....1-22
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-35
Rear Seat Passengers.................................1-31
Right Front Passenger Position......................1-31
Safety Belt Extender....................................1-37
Safety Belt Use During Pregnancy.................1-31
Safety Belts Are for Everyone.......................1-18
Shoulder Belt Height Adjuster........................1-30
Safety Warnings and Symbols.............................. iii
Seatback Latches............................................. 1-6Seats
Bench Seat................................................1-11
Bucket Seats, Rear......................................1-17
Head Restraints............................................ 1-6
Manual........................................................ 1-3
Manual Lumbar............................................. 1-4
Power Seat.................................................. 1-3
Rear Seat Operation...................................... 1-7
Reclining Seatbacks...................................... 1-4
Seatback Latches.......................................... 1-6
Securing a Child Restraint
Center Rear Seat Position............................1-58
Designed for the LATCH System...................1-56
Rear Outside Seat Position...........................1-57
Right Front Seat Position..............................1-60
Security Light.................................................3-34
Selecting the Right Schedule, Maintenance.......... 6-5
Service........................................................... 5-3
Adding Equipment to the Outside of
Your Vehicle.............................................. 5-5
All-Wheel-Drive Light....................................3-34
Doing Your Own Work................................... 5-4
Engine Soon Light.......................................3-30
Publications Ordering Information...................7-12
Servicing Your Airbag-Equipped Vehicle..............1-69
11

Setting the Time
Radios with HR and MN Buttons...................3-40
Radios with the Set Button...........................3-40
Sheet Metal Damage.......................................5-91
Shifting Into Park (P).......................................2-24
Shifting Out of Park (P)...................................2-25
Short Trip/City Scheduled Maintenance................ 6-7
Shoulder Belt Height Adjuster...........................1-30
Signals, Turn and Lane-Change.......................... 3-7
Sliding Side Door............................................. 2-8
Spare Tire
Installing....................................................5-76
Removing...................................................5-73
Storing.......................................................5-82
Specications, Capacities...............................5-101
Speedometer..................................................3-25
Starting Your Engine.......................................2-18
Steering.......................................................... 4-9
Steering, Suspension and Front Drive
Axle Boot and Seal Inspection.......................6-28
Steering Wheel, Tilt Wheel................................. 3-6
Storage Areas................................................2-33
Convenience Net.........................................2-38
Luggage Carrier..........................................2-38
Overhead Console.......................................2-35
Stuck in Sand, Mud, Ice or Snow......................4-27
Sun Visors.....................................................2-15T
Taillamps
Turn Signal, Stoplamps and Back-up Lamps....5-55
Theft-Deterrent, Radio.....................................3-48
Theft-Deterrent Systems...................................2-16
Passlock
®...................................................2-16
Throttle System Inspection...............................6-29
Tilt Wheel........................................................ 3-6
Tires.............................................................5-58
Aluminum Wheels, Cleaning..........................5-90
Buying New Tires........................................5-67
Chains.......................................................5-71
Changing a Flat Tire....................................5-72
Cleaning....................................................5-90
Compact Spare Tire.....................................5-84
If a Tire Goes Flat.......................................5-71
Ination -- Tire Pressure...............................5-64
Inspection and Rotation................................5-65
Installing the Spare Tire................................5-76
Removing the Flat Tire.................................5-76
Removing the Spare Tire and Tools...............5-73
Storing a Flat or Spare Tire and Tools............5-82
Tire Sidewall Labelling..................................5-59
Tire Terminology and Denitions....................5-61
Uniform Tire Quality Grading.........................5-68
Wheel Alignment and Tire Balance.................5-69
12