GM Service Manual Online
For 1990-2009 cars only

Listed below are the vehicle inspections and services that should be made by either the owner or a qualified technician at the frequencies indicated to help ensure the following:

    • Proper safety of the vehicle.
    • The vehicle emission system performance.
    • Dependability of the vehicle.

Complete any necessary repairs at once. Use the proper fluids or lubricants whenever adding to the vehicle.

For information on fluids and lubricants to use when service is required, refer to Fluid and Lubricant Recommendations .

At Least Monthly

Tire Inflation Check

Make sure tires are inflated to the correct pressures, refer to Tire Inflation Pressure Specifications .

Cassette Deck Service

Clean the cassette deck. Cleaning should be done every 50 hours of tape play.

At Least Twice A Year

Restraint System Check

Make sure the safety belt reminder light and all the belts, buckles, latch plates, retractors, anchorages are working properly. Look for any other loose or damaged safety belt system parts. If anything is seen that might keep a safety belt system from doing it's job, have it repaired. Have any torn or frayed seat belts replaced. For seat belt diagnosis information, refer to Operational and Functional Checks .

Also look for any opened or broken supplemental inflatable restraint (SIR) coverings, and have them repaired or replaced. (The SIR system does not need regular maintenance.) For SIR diagnosis information, refer to SIR General Diagnosis .

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. Refer to Wiper Blade Element Replacement .

Automatic Transmission Check

Check the automatic transmission fluid level; and add if needed. A fluid loss may indicate a problem. Check the system and repair if needed.

For information on the correct fluid to use, refer to Fluid and Lubricant Recommendations .

At Least Once A Year

Key Lock Cylinders Service

Lubricate the key lock cylinders with the proper lubricant.

For information on the proper lubricant to use, refer to Fluid and Lubricant Recommendations .

Body Lubrication Service

Important: The passenger door hinges and door check links should not be lubricated.

Lubricate body hinges and latches, including the following:

    • The hood
    • The rear compartment lid
    • The fuel door
    • The headlamp pivot points
    • The center console door
    • The instrument panel compartment

More frequent lubrication may be required when exposed to a corrosive environment.

For information on the proper lubricants to use, refer to Fluid and Lubricant Recommendations .

Starter Switch Check

Caution: When performing this check, the vehicle could move suddenly. Personal injury or property damage may result. Make sure there is enough room around the vehicle, in case the vehicle does move. Do not use the accelerator pedal, and be ready to turn OFF the engine immediately if it starts.

  1. Before you start, be sure you have enough room around the vehicle.
  2. Firmly apply both the parking brake and the regular brake.
  3. Try to start the engine in each gear. The starter should work only in PARK (P) or NEUTRAL (N). If the starter works in any other position, service the vehicle as necessary.

Brake Transaxle Shift Interlock (BTSI) Check

Caution: When performing this check, the vehicle could move suddenly. Personal injury or property damage may result. Make sure there is enough room around the vehicle, in case the vehicle does move. Be ready to apply the regular brake immediately should the vehicle begin to move.

  1. Before you start, be sure that you have enough room around the vehicle. It should be parked on a level surface.
  2. Firmly apply the parking brake.
  3. With the engine off, turn the key to ON, but do not start the engine. Without applying the regular brake, try to move the shift lever out of PARK (P) with normal effort. If the shift lever moves out of PARK (P), service the vehicle as necessary.

Ignition Transaxle Lock Check

While parked, and with the parking brake set, try to turn the ignition key to OFF in each shift lever position.

    • The key should turn to OFF only when the shift lever is in PARK (P).
    • The key should come out only in OFF.

Parking Brake and Automatic Transaxle PARK (P) Mechanism Check

Caution: When performing this check, the vehicle could begin to move. Personal injury or property damage may result. Make sure there is enough room in front of the vehicle, in case the vehicle begins to roll. Be ready to apply the regular brake immediately should the vehicle begin to move.

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.

    • To check the parking brake's holding ability: with the engine running and transaxle in NEUTRAL (N), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only. If the vehicle moves, service the parking brake as necessary.
    • To check the PARK (P) mechanism's holding ability: with the engine running, shift to PARK (P), then release all brakes. If the vehicle moves, service the PARK (P) mechanism as necessary.

Underbody Flushing Service

At least every spring, use plain water to flush any corrosive materials from the underbody. Take care to clean thoroughly any areas where mud and other debris can collect.