wheel alignment CHEVROLET ASTRO PASSENGER 1993 1.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine failure. The grade C corresponds to a level of performance which all
passenger car tires must meet under the Federal Motor Vehicle \
Safety
Standard
No. 109. Grades B and A represent higher levels of performance on
the laboratory test wheel than the minimum required by law.
Warning: The temperature grade for this tire is established for\
a tire that is
properly inflated and not overloaded. Excessive speed, underinfla\
tion,
or
excessive loading, either separately or in combination, can cause heat buildup
and possible tire failure.
These grades are molded on the sidewalls of passenger car tire\
s.
While the tires available as standard
or optional equipment on General Motors
vehicles may vary with respect to these grades, all such tires meet General
Motors performance standards and have been approved for use on \
General
Motors vehicles.
All passenger type (P Metric) tires must conform to Federal
safety requirements in addition to these grades.
Wheel Alignment and lire Balance
The wheels on your vehicle were aligned and balanced carefully \
at the
factory to give you the longest tire life and best overall pe\
rformance.
In most cases, you will not need
to have your wheels aligned again.
However,
if you notice unusual tire wear or your vehicle pulling one way or
the other, the alignment may need to be reset. If you notice your vehicle
vibrating when driving on a smooth road, your wheels may need \
to be
rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted. If wheel nuts keep
coming loose the wheel, wheel
bolts, and wheel nuts should be replaced. If
the wheel leaks air out, replace it (except some aluminum whe\
els, which can
sometimes be repaired). See your GM dealer if any of these c\
onditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load carrying capacity dia\
meter, 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 you have the right wheel, wheel bolts, and wheel nuts\

for your
vehicle.
6-50

Downloaded from www.Manualslib.com manuals search engine 13. TIRE AND WHEEL ROTATION AN- INSPECTION -For proper wear
and maximum tire life, rotate tires at the first
6,000 miles (1 0 000
kilometers) for Schedule I or 7,500 miles (12 500 kilometers) for
Schedule
II and then every 7,500 miles (12 500 kilometers) thereafter.
Follow the instructions and patterns shown in Section
6. Check tires for
uneven wear or damage.
If irregular or premature wear is apparent,
check wheel alignment.
Also, check for damaged wheels. See “Tires” in
the Index for more information.
14.
DRIVE AXLE SERVICE -Check readfront axle fluid level and add as
needed. Check constant velocity joints and axle seals for leaki\
ng.
Locking differential -Drain fluid at first oil change and refill. Check
fluid level and add as needed at subsequent oil changes. In d\
usty areas, or trailer towing applications drain fluid at every 15,000 miles
(24 135 kilometers) and refi1l.t
Standard differential -Check fluid level and add as needed at
every oil change. In dusty areas, or trailer towing application\
s, drain
fluid every
15,000 miles (24 135 kilometers) and refi1l.t
15.
BRAKE SYSTEM INSPECTION -When the engine oil is changed,
inspect the lines and hoses for proper hookup, binding, leaks, \
cracks,
chafing, etc. Check the parking brake adjustment, and the fluid\
level in
the master cylinder.
A low fluid level can indicate worn disc brake pads
which may need
to be serviced$
When the wheels are removed for rotation, inspect disc brake p\
ads for
wear and rotors for surface condition.
Also inspect drum brake linings for
wear and cracks. Inspect other brake parts, including drums, wh\
eel
cylinders, parking brake, etc., at the same time.
Inspect brakes more often if driving habits or conditions result in
frequent braking.
tA fluid loss in these systems may indicate a problem. Have them inspected
and repaired at once.
7-1 0

Downloaded from www.Manualslib.com manuals search engine INDEX
Trip Odometer ............................... 2-57
Turn SignaVMultifunction Lever
... 2-29
Lane Change Indicator
.. .2-30, 2-67
V
Damage Warnings ...................... 0-3
Identification Number
................ 6-60
Storage
...................................... 6-34
Symbols
...................................... -0-4
Ventilation System
.......................... 3-3
Air Vents
...................................... 3-4
Tips
.............................................. 3-3
Voltmeter
....................................... 2-64
W
Warning Lights and Gauges ....... 2-57
Antilock Brake
................. 2-59, 4-16
Devices, Other
............................ 5-3
Washing Your Vehicle
.................. 6-56
Vehicle
Service Engine Soon
...... 2-61, 6-41 Weatherstrips
................................ 6-57
Wheels Alignment and Tire Balance
.......................... 6-50
Aluminum
................................... 6-57
Front Bearings
Nut Torque
................................. 6-64
Replacement
.............................. 6-50
Windows
........................................ 2-26
Rear Defogger
............................. 3-8
Swing-Out
.................................. 2-26
Windshield Washer
....................... 2-33
Fluid
........................................... 6-31
Rear Washer
............................. 2-34
Windshield Wipers
.............. 2-32, 6-39
Blade Chatter
............................ 6-56
Blade Inserts
............................. 6-39
Cleaning Blades
........................ 6-56
Low Speed Delay
..................... 2-32
Rear Window
............................. 2-34
Winter Driving
............................... 4-40
(Two-Wheel Drive)
................. 6-38
9-6