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• Wheel Alignment and Wheel Bal-
anCe-are affected by operating
conditions such as hitting chuck
holes and curbs, rapid starts and
stops, tire skidding, etc. Wheel
alignment and balancing service
contribute to longer tire life and
better vehicle handling.
• Tire Rotation-Rapid acceleration,
quick stops, car speed and loading
affect tire life and can cause uneven
wear. Tires should be rotated regu-
larly for uniform wear and maxi-
mum.1ife.
• Brake Services-Brake linings are
subject to wear from usage depend-
ing upon driving conditions and driv-
ing habits of each individual driver.
Periodic check of brake lining con-
dition by a qualified technician is
recommended for safe operation.
When brake system requires serv-
ice, replace with genuine GM parts.
• Engine Oil Change and Filters-
Changing engine oil, and air, fuel
and oil filters at recommended in-
tervals is the owner's best invest-
ment in prolonged engine life, effi-
ciency and performance. When re-
placement is necessary, always in-
sist on AC Acron filters.
• Transmission
Oil
Change -
Ex-
tended use and contamination affect
transmission fluid. To assure effi-
cient op~ration, transmission oil pan
should be drained and fresh fluid
added, and, strainer replaced, at the
recommended intervals. DEXRON®
fluid is recommended for automat-
ic transmissions.
• Emission Control-A check of the
items affecting vehicle emission
control at the first oil change
(4
months or 6,000 miles, which ever
occurs first) is important to control
hydro-carbon and carbon monoxide
emissions within levels established
by government standards and thus
reduce air pollution. Subsequent
checks should be made every 12
months or 12,000 miles, whichever
occurs first. This check involves the
adjustment of engine idle speed,
48
idle fuel mixture, engine timing and
an operational check of the Positive
Crankcase Ventilation Valve (PCV)
and related parts. Climatic condi-
tions, type of operation, wear and
contamination can affect these en-
gine adjustments and proper func-
tioning of the PCV valve. Checking
for proper operation will not only
contribute to the control of exhaust
and engine emissions, but will im-
prove performance and economy.
• Engine Tune-Up and Electrical
CheckS-Fuel and electrical sys-
tems are subject to wear and con-
tamination and require periodic
cleaning and adjustments to main-
tain maximum economy and
per~
formance. These same factors which
have an important effect in the con-
trol of air pollution are included in
engine tune-ups which are recom-
mended at one year or 12,000-mile
intervals.
• Positive Crankcase Ventilation
Valve
Replacement -
Crankcase
vapors and other impurities can
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