The services shown in this schedule up to 100,000 miles (166 000 km) should be repeated after 100,000 miles (166 000 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.

See Part B: Owner Checks and Services and Part C: Periodic Maintenance Inspections .

† 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 the GM Oil Life System, a computer system lets you know when to change the engine oil and filter. 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. An ENGINE OIL CHANGE SOON message will come on. Change your oil as soon as possible within the next two times you stop for fuel. See Engine Oil . 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 filter 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.

If the system is ever reset accidentally, you must change your oil at 3,000 miles (5 000 km) since your last oil change. Remember to reset the oil life system whenever the oil is changed. See Engine Oil Life System for information on resetting the system.

@ Whenever the tires are rotated, the Check Tire Pressure System must be reset.

+ A good time to check your brakes is during tire rotation. See Brake System Inspection .

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Inspect engine air cleaner filter. If necessary, replace the filter. If vehicle is driven in dusty/dirty conditions, inspect filter at every engine oil change. See Engine Air Cleaner/Filter for more information.

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Inspect engine air cleaner filter. If necessary, replace the filter. If vehicle is driven in dusty/dirty conditions, inspect filter at every engine oil change. See Engine Air Cleaner/Filter for more information.

•	V8 engine only: Inspect throttle body bore and valve plates for deposits, open the throttle valve and inspect all surfaces. Clean as required. An Emission Control Service. (See footnote †.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Replace engine air cleaner filter. See Engine Air Cleaner/Filter for more information.

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change automatic transaxle 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 90°F (32°C) 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 at 100,000 miles (166 000 km).

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Inspect engine air cleaner filter. If necessary, replace the filter. If vehicle is driven in dusty/dirty conditions, inspect filter at every engine oil change. See Engine Air Cleaner/Filter for more information.

•	V8 engine only: Inspect throttle body bore and valve plates for deposits, open the throttle valve and inspect all surfaces. Clean as required. An Emission Control Service. (See footnote †.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Inspect engine air cleaner filter. If necessary, replace the filter. If vehicle is driven in dusty/dirty conditions, inspect filter at every engine oil change. See Engine Air Cleaner/Filter for more information.

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Replace engine air cleaner filter. See Engine Air Cleaner/Filter for more information.

•	V8 engine only: Inspect throttle body bore and valve plates for deposits, open the throttle valve and inspect all surfaces. Clean as required. An Emission Control Service. (See footnote †.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.)

•	Rotate tires. See Tire Inspection and Rotation for proper rotation pattern and additional information. (See footnote @.) (See footnote +.)

•	V6 engine only: Inspect spark plug wires. An Emission Control Service.

•	Replace spark plugs. An Emission Control Service.

•	Change automatic transaxle 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 90°F (32°C) or higher.

In hilly or mountainous terrain.

When doing frequent trailer towing.

Uses such as found in taxi, police, or delivery service.

•	If you have not used your vehicle under severe service conditions listed previously and, therefore, have not changed your automatic transaxle fluid, change both the fluid and filter.

•

Drain, flush, and refill cooling system (or every 60 months since last service, whichever occurs first). This service can be complex; you should have your dealer perform this service. See Engine Coolant 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.

•	Inspect engine accessory drive belt. Visually inspect belt for fraying, excessive cracks, or obvious damage. Replace belt if necessary. An Emission Control Service.