The following lists 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:
| • | The proper safety of the vehicle. |
| • | The vehicle emission system performance. |
| • | The 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 .
For emission system diagnosis information, refer to Fuel System Diagnosis or Fuel System Diagnosis in Engine Controls.
At Least Monthly
Tire Inflation Check
Inspect the tire pressure when the tires are cold. Maintain the tire pressures indicated on the Tire Placard on the driver's door of the vehicle, or refer to Tire Inflation Pressure Specifications .
Cassette Deck Service
Clean the cassette deck. Cleaning should be done every 50 hours of tape play in order to prevent permanent damage, or every 30 hours for maximum performance. Refer to Cassette Player Care and Cleaning in Entertainment.
At Least Twice A Year
Restraint System Check
Verify that the following components work properly:
| • | The belts |
| • | The buckles |
| • | The latch plates |
| • | The retractors |
| • | The anchorages |
Inspect the safety belt system for any loose or damaged parts. If you find any loose or damaged parts, repair the components.. Replace any torn or frayed seat belts. For seat belt diagnosis information, refer to Operational and Functional Checks in Seat Belts.
Inspect the system for any opened or broken supplemental inflatable restraint (SIR) covers. For SIR diagnosis information, refer to SIR General Diagnosis in SIR.
The SIR system does not need regular maintenance.
Throttle System Inspection
The throttle system includes the accelerator and the cruise control. The throttle system should operate freely without hesitation between full closed and wide open throttle.
Important: Do not lubricate the accelerator and the cruise control cables. Replace the throttle system components causing hesitation or sticking.
Inspect for the following conditions:
| • | Missing parts such as retainers or clips. |
| • | Interference of the linkage or the cable conduit to critical components such as the fuel lines, the brake lines, the harness leads, etc. |
| • | Proximity of the cable to the exhaust system and other heat sources. Inspect for melting and/or discoloration. |
| • | Cable kinking. Avoid sharp bends of cables. |
| • | Clearance of the throttle system moving parts throughout their travel from other stationary components. |
| • | Damage of the components due to cable kinking, severe kinking, severe abrasion, misalignment, etc. If any of the above conditions exist, notify your dealer for a recommended rerouting, adjustment, or replacement. |
Automatic Transmission Check
Check the automatic transmission fluid level. Add the proper transmission fluid 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 .
For the automatic transmission fluid level checking procedure, refer Transmission Fluid Check in Transmission/Transaxle.
Weatherstrip Lubrication
Clean the weatherstrip surface, and then apply a thin film of silicone grease, GM P/N 3634770 or equivalent, using a clean, dry cloth.
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 Body and Accessories.
At Least Once A Year
Key Lock Cylinders
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
Lubricate all body door hinges and latches, including the following:
| • | The hood |
| • | The rear compartment lid |
| • | The fuel door |
| • | The headlamp pivot points |
| • | The console door |
| • | The I/P passenger compartment |
For information on the proper lubricants to use, refer to Fluid and Lubricant Recommendations .
More frequent lubrication may be required when exposed to a corrosive environment.
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.
On an automatic transmission vehicle, try to start the engine in each gear. The starter should crank only in PARK or NEUTRAL. If the starter operates in any other position, the vehicle needs service.
On a manual transmission vehicle, place the shift lever in NEUTRAL, push the clutch pedal down halfway and try to start the engine. The starter should operate only when the clutch pedal is fully depressed all the way to the floor. If the starter operates when the clutch pedal is not pushed all the way down to the floor, the vehicle needs service.
Brake Transmission 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.
With the engine OFF, turn the ignition to RUN, but do not start the engine. Without applying the regular brakes, try to move the transmission shift lever out of PARK with normal effort. If the shift lever moves out of PARK, the brake transmission shift interlock (BTSI) needs service. For wiring schematic information, Refer to Shift Lock Control Schematics in Steering Wheel and Column-Tilt.
For the BTSI solenoid replacement procedure, refer to Automatic Transmission Shift Lock Control Disassemble - Off Vehicle in Steering Wheel and Column-Tilt.
Steering Column Park Lock Check
While parked and with the parking brake set, try to turn the ignition key to LOCK in each shift lever position.
On an automatic transmission vehicle, the key should turn to LOCK only when the shift lever is in PARK.
On a manual transmission vehicle, the key should turn to LOCK only when the shift lever is in REVERSE.
On all vehicles, the key should come out only in the LOCK position. For diagnostic information, Refer to Steering Column Lock Diagnostic System Check in Steering Wheel and Column-Tilt.
Parking Brake and Automatic Transmission PARK 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.
To check the parking brake's holding ability: with the engine running and transmission in NEUTRAL, slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.
To check the automatic transmission PARK mechanism's holding ability: with the engine running, shift the transmission to PARK, then release all brakes. For diagnosis information of a malfunctioning PARK mechanism, refer to No Park or No Park in Transmission/Transaxle.
Underbody Flushing
At least every spring, use plain water to flush any corrosive materials from the underbody. Take care to thoroughly clean any areas where mud and other debris can collect.
