Scheduled Maintenance
The services shown in this schedule up to
100,000 miles (160 000 km) should be repeated
after 100,000 miles (160 000 km) at the same
intervals for the life of this vehicle. The services
shown at 150,000 miles (240 000 km) should
be repeated at the same interval after
150,000 miles (240 000 km) for the life of
this vehicle.
SeePart B: Owner Checks and Services on
page 346andPart C: Periodic Maintenance
Inspections on page 351.
Footnotes
†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 the
vehicle’s useful life. We, however, urge that all
recommended maintenance services be performed
at the indicated intervals and the maintenance
be recorded.*If your vehicle has a Driver Information Center
(DIC), it also has the GM Oil Life System, a
computer system that lets you know when to
change the oil and lter. This is based on engine
revolutions and engine temperature and not
on mileage. Based on driving conditions, the
mileage at which an oil change will be indicated
can vary considerably. For the oil life system
to work properly, you must reset the system every
time the oil is changed.
When the system has calculated that oil life has
been diminished, it will indicate that an oil change
is necessary. A CHANGE OIL SOON message
on the Driver Information Center (DIC) will
come on. See DIC Warnings and Messages on
page 148. Change your oil as soon as possible
within the next two times you stop for fuel.
See Engine Oil on page 247. It is possible that,
if you are driving under the best conditions, the
oil life system may not indicate that an oil change
is necessary for over a year. However, your
engine oil and lter must be changed at least
once a year and at this time the system must be
reset. It is also important to check your oil regularly
and keep it at the proper level.
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