Page 270 of 372

Temperature - A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation of
heat and
its ability to dissipate heat when tested under
controlled conditions on
a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material
of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire 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, underinflation, 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 tires. 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 Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at
the factory to give you the longest tire life
and best overall performance.
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.
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Page 298 of 372

I Maintenance Schedule I I
The services shown in this schedule up to 100,000 miles
( 166 000 km) should be performed after 100,000 miles
(1 66 000 km) at the same intervals.
Footnotes
f- The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not
nullify
the emission warranty or limit recall liability prior to the
completion
of vehicle useful life. We, however, urge that
all recommended maintenance services be performed at
the indicated intervals and the maintenance be recorded.
* Your vehicle has an Engine Oil Life Monitor.
This monitor will show you when to change the oil
--
usually between 3,000 miles (5 000 km) and 7,500 miles
(1 2 500 km) since your last oil change. Under severe
conditions the indicator may come
on before
3,000 miles (5 000 km). Never drive your vehicle
more than
7,500 miles (12 500 km) or 12 months
without an oil change.
The system won’t detect dust in
the oil. So if you
drive
in a dusty area be sure to change your oil every
3,000 miles (5 000 km) or sooner if the CHANGE OIL
light comes on. Remember to reset the Oil Life Monitor
when the oil has been changed. For more information,
see “Engine Oil Life Monitor” in the Index.
7-6
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Page 318 of 372

Maintenance Schedule I1 I
The services shown in this schedule up to 100,000 miles
(166
000 km) should be performed after 100,000 miles
(166 000 km) at the same intervals.
Footnotes
3- The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will
not nullify
the emission warranty
or limit recall liability prior to the
completion of vehicle useful life.
We, however, urge that
all recommended maintenance services be performed at
the indicated intervals and the maintenance be recorded.
* Your vehicle has an Engine Oil Life Monitor. This
monitor will show you when to change the oil
-- usually
between
3,000 miles (5 000 km) and 7,500 miles
(12
500 km) since your last oil change. Under severe
conditions, the indicator may come
on before 3,000 miles
(5 000 km). Never drive your vehicle more than
7,500 miles (12 500 km) or 12 months without an
oil change.
The system won’t detect dust in the oil.
So if you
drive
in a dusty area, be sure to change your oil every
3,000 miles (5 000 km) or sooner if the CHANGE OIL
light comes on. Remember to reset the Oil Life Monitor
when
the oil has been changed. For more information,
see “Engine Oil Life Monitor”
in the Index.
7-26
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