Page 337 of 396

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.
337
Page 347 of 396

At Least Twice a Year
Restraint System Check
Make sure the safety belt reminder light and all
your belts, buckles, latch plates, retractors
and anchorages are working properly. Look for
any other loose or damaged safety belt system
parts. If you see anything that might keep a safety
belt system from doing its job, have it repaired.
Have any torn or frayed safety belts replaced.
Also look for any opened or broken airbag
coverings, and have them repaired or replaced.
The airbag system does not need regular
maintenance.
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace
blade inserts that appear worn or damaged or
that streak or miss areas of the windshield. Also
seeWindshield and Wiper Blades on page 320.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them
last longer, seal better, and not stick or squeak.
Apply silicone grease with a clean cloth.During very cold, damp weather more frequent
application may be required. SeePart D:
Recommended Fluids and Lubricants on page 353.
Manual Transmission Check
It is not necessary to check the transmission uid
level. Check for leaks. A uid leak is the only
reason for uid loss. Have the system inspected
and repaired if needed.
Automatic Transmission Inspection
It is not necessary to check the transmission uid
level. A transmission uid leak is the only
reason for uid loss. Check for leaks. If a leak
occurs, take the vehicle to your dealer and have it
repaired as soon as possible.
Hydraulic Clutch System Check
Check the uid level in the brake system and
clutch system reservoir. SeeHydraulic Clutch on
page 256. A uid loss in the brake or clutch
hydraulic system could indicate a problem. Have
the system inspected and repaired at once.
347
Page 351 of 396

Part C: Periodic Maintenance
Inspections
Listed in this part are inspections and services
which should be performed at least twice a
year (for instance, each spring and fall).You
should let your dealer’s service department
do these jobs. Make sure any necessary repairs
are completed at once.
Proper procedures to perform these services may
be found in a service manual. SeeService
Publications Ordering Information on page 380.
Steering and Suspension Inspection
Inspect the front and rear suspension and
steering system for damaged, loose or missing
parts, signs of wear or lack of lubrication. Inspect
the power steering lines and hoses for proper
hook-up, binding, leaks, cracks, cha ng, etc.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the
body near the exhaust system. Look for broken,
damaged, missing or out-of-position parts as
well as open seams, holes, loose connections
or other conditions which could cause a heat
build-up in the oor pan or could let exhaust fumes
into the vehicle. SeeEngine Exhaust on page 91.
Fuel System Inspection
Inspect the complete fuel system for damage
or leaks.
351
Page 355 of 396