Page 357 of 391

Long Trip/Highway Scheduled Maintenance
7-33
Change automatic transmission fluid and filter if the vehicle is mainly driven
under one or more of these conditions:
± In heavy city traffic where the outside temperature regularly
reaches 90F (32C) or higher.
± In hilly or mountainous terrain.
± When doing frequent trailer towing.
± Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these conditions, change the fluid
and filter every 100,000 miles (166 000 km).
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
Inspect engine accessory drive belts (or every 30 months, whichever
occurs first).
Drain, flush and refill cooling system (or every 30 months, whichever occurs
first). See ªEngine Coolantº in the Index for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and neck. Pressure test the cooling
system and pressure cap.
An Emission Control Service. (See footnote .)
(Continued)
Page 361 of 391

Long Trip/Highway Scheduled Maintenance
7-37
Change automatic transmission fluid and filter if the vehicle is mainly driven
under one or more of these conditions:
± In heavy city traffic where the outside temperature regularly
reaches 90F (32C) or higher.
± In hilly or mountainous terrain.
± When doing frequent trailer towing.
± Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these conditions, change the fluid
and filter every 100,000 miles (166 000 km).
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
Inspect engine accessory drive belts (or every 30 months, whichever
occurs first).
An Emission Control Service.
Drain, flush and refill cooling system (or every 30 months, whichever occurs
first). See ªEngine Coolantº in the Index for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and neck. Pressure test the cooling
system and pressure cap.
An Emission Control Service. (See footnote .)
(Continued)
Page 366 of 391

Long Trip/Highway Scheduled Maintenance
7-42
90,000 Miles (150 000 km) (Continued)
Drain, flush and refill cooling system (or every 30 months, whichever occurs
first). See ªEngine Coolantº in the Index for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and neck. Pressure test the cooling
system and pressure cap.
An Emission Control Service. (See footnote .)
Inspect ignition coil plug cap (or every 30 months, whichever occurs first).
An Emission Control Service.
Replace engine air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap
gasket for any damage. Replace parts as needed.
An Emission Control Service. (See footnote .)
Change manual transmission fluid.
Change transfer case fluid.
Change differential fluid.
Replace fuel filter (or every 30 months, whichever occurs first).
An Emission Control Service. (See footnote .)
Inspect the valve lash and adjust if necessary (1.6L Code 6 engine only).
An Emission Control Service.
Page 368 of 391

7-44
Part B: Owner Checks and Services
Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See ªEngine Oilº in the Index for
further details.
Engine Coolant Level Check
Check the engine coolant level and add the proper
coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See ªWindshield Washer Fluidº in the Index
for further details.
Hood Latch Operation Check
Pull the primary hood latch release handle inside the
vehicle. The secondary latch should keep the hood from
opening all the way when the primary latch is released.
Make sure the hood closes firmly. See ªHood Releaseº
in the Index for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
Don't forget to check your spare tire. See ªTiresº in the
Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the
Index for further details.
Page 374 of 391
7-50
Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE
FLUID/LUBRICANT
Engine OilEngine oil with the American
Petroleum Institute Certified
for Gasoline Engines starburst
symbol of the proper viscosity.
To determine the preferred
viscosity for your vehicle's
engine, see ªEngine Oilº in
the Index.
USAGEFLUID/LUBRICANT
Engine Coolant50/50 mixture of clean,
drinkable water (preferable
distilled) and good quality
Ethylene Glycol Base Coolant
(GM Part No. 1052753 or
equivalent) conforming to GM
Specification 1825M or
approved recycled coolant
conforming to GM
Specification 1825M. See
ªEngine Coolantº in the Index.
Hydraulic
Brake SystemDelco Supreme 11 Brake
Fluid (GM Part No. 12377967
or equivalent DOT
-3
brake fluid).
Windshield
Washer SolventGM Optikleen Washer
Solvent (GM Part
No. 1051515) or equivalent.