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:

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 Symptoms in Engine Controls.

Engine Oil Level Check

The engine oil level indicator (dipstick) is located on the RH side of the engine, next to the coolant surge tank.

1. Park the vehicle on a flat, level surface.

Important: The engine oil must be WARM to obtain an accurate oil level reading.

2. Run the engine for 3 minutes to warm the engine oil.
3. Turn OFF the engine and allow the engine to cool for a minimum of 3 minutes.
4. Pull out the engine oil level indicator from the tube and wipe the oil level indicator clean with a paper towel or a clean, dry cloth.
5. Insert the oil level indicator into the tube and push down all the way.
6. Remove the oil level indicator again and keep the tip of the indicator down.
7. Check the engine oil level.
8. Add the proper oil if necessary. For information on the proper oil to use, refer to Fluid and Lubricant Recommendations .

Engine Coolant Level Check

Check the engine coolant level and add the proper coolant mix if necessary. For information on the proper coolant mix to use, refer to Fluid and Lubricant Recommendations .

For information on how to check the engine coolant level, refer to the Owner's Manual.

Windshield Washer Fluid Level Check

Checking the windshield washer fluid level in the windshield washer tank is done by a level sensor and is indicated to the driver through the driver information center (DIC) display. Simply add the proper fluid when necessary. For information on the proper fluid to use, refer to Fluid and Lubricant Recommendations .

For information on how to check the windshield washer fluid level, refer to the Owner's Manual.

Tire Inflation Check

Check the tire pressure when the tires are COLD. Maintain 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 to prevent permanent damage, or every 30 hours for maximum performance. Refer to Cassette Player Care and Cleaning in Entertainment.

Power Antenna Service

Clean the power antenna mast. Refer to Antenna Mast Cleaning in Entertainment.

Restraint System Check

Make sure the safety belt reminder light and all the belts, buckles, latch plates, retractors and anchorages are working properly. Look for any other loose or damaged safety belt system parts. If anything is seen that might keep a seat 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 in Seat Belts.

Also look 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.

Manual Transmission Check

Check the manual transmission fluid level. Add the proper transmission fluid if needed. Check for transmission fluid leaks. 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 manual transmission fluid level checking procedure, refer to Transmission Fluid Level Inspection in Manual Transmission.

Automatic Transmission Check

Check the automatic transmission fluid level. A fluid leak is the only reason for fluid loss. Check for transmission fluid leaks and repair as necessary. For information on the correct fluid to use, refer to Fluid and Lubricant Recommendations .

For the automatic transmission fluid level checking procedure, refer to Transmission Fluid Check in Automatic Transmission.

Weatherstrip Lubrication

Clean the weatherstrip surface, and then apply a thin film of silicone grease, GM P/N 12345579 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 Wiper Blade Element Replacement in Wipers/Washer Systems.

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:

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.

Brake Transmission Shift Interlock (BTSI) Check (Automatic Transmission)

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.

For wiring schematic information, refer to BTSI Schematics in Steering Wheel and Column.

For the BTSI solenoid replacement procedure, refer to Brake Transmission Shift Interlock Solenoid Replacement in Automatic Transmission.

Steering Column Park Lock Check

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

On an automatic transmission vehicle, the key should turn to OFF only when the shift lever is in PARK.

On a manual transmission vehicle, the key should turn to OFF only when the shift lever is in REVERSE.

On all vehicles, the key should come out only in the OFF position. For wiring schematic information, refer to Column/Ignition Lock Schematics in Steering Wheel and Column.

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.

For diagnosis information of a malfunctioning PARK mechanism, refer to No Park in Automatic Transmission.

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.