For 1990-2009 cars

### Normal Vehicle Use

The maintenance instructions contained in this Maintenance Schedule are based on the assumption that the vehicle will be used as designed:

• | To carry passengers and cargo within the recommended limitations as indicated on the Tire Placard located on the edge of the driver's door.

• | To be driven on reasonable road surfaces within legal driving limits.

• | Use unleaded gasoline of the recommended type.

### Maintenance Schedule Intervals

The services shown in this schedule up to 166 000 km (100,000 mi) should be performed after 166 000 km (100,000 mi) at the same intervals. The services shown in this schedule to be performed at 240 000 km (150,000 mi) should be performed after 240 000 km (150,000 mi) at the same intervals.

For explanations of the maintenance inspections and services included in this Maintenance Schedule, refer to Explanation of Scheduled Services .

For additional maintenance inspections and services which are not included in this Maintenance Schedule, refer to Owner Checks and Services and Periodic Maintenance Inspection .

### Engine Oil Scheduled Maintenance

Change engine oil and filter as indicated by the GM Oil Life System™ or every 12 months, whichever occurs first. Reset the system.

Your vehicle has a computer system that 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. A CHANGE ENGINE OIL message in the Driver Information Center (DIC) will come on. Change your oil as soon as possible within the next two times you stop for fuel. 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 you oil at 5,000 km (3,000 mi) since your last oil change. Remember to reset the oil life system whenever the oil is changed. Refer to GM Oil Life System Resetting .

### Footnotes

[Dagger] 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.

* Reset the tire pressure monitor system whenever the tires are rotated if equipped. Refer to Suspension in Tire Pressure Monitor Procedure .

+ A good time to check your brakes is during the tire rotation. Refer to Brake System Inspection in Periodic Maintenance Inspection .

#### 12 500 km (7,500 mi)

Rotate the tires. + *

#### 25 000 km (15,000 mi)

• | Inspect the air cleaner filter if the vehicle is driven in dusty conditions. Replace the filter if necessary.

| This is an emission control service. [Dagger]

• | Rotate the tires. + *

#### 37 500 km (22,500 mi)

Rotate the tires. + *

#### 50 000 km (30,000 mi)

• | Rotate the tires. + *

• | Replace engine air cleaner filter.

| This is an Emission Control Service.

#### 62 500 km (37,500 miles)

Rotate the tires. + *

#### 75 000 km (45,000 mi)

• | Inspect engine air cleaner filter if you are driving in dusty conditions. Replace the filter if necessary.

| This is an Emission Control Service [Dagger]

• | Rotate the tires. + *

#### 83 000 km (50,000 mi)

Change the 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 this vehicle is not driven under any of these conditions, the fluid and filter do not require changing.

#### 87 500 km (52,500 mi)

Rotate the tires. + *

#### 100 000 km (60,000 mi)

• | Rotate the tires. + *

• | Inspect the engine accessory drive belt.

| This is an Emission Control Service.

• | Replace the engine air cleaner filter.

| This is an Emission Control Service.

#### 112 500 km (67,500 mi)

Rotate the tires. + *

#### 125 000 km (75,000 mi)

• | Inspect the engine air cleaner filter if you are driving in dusty conditions. Replace the filter if necessary.

| This is an Emission Control Service. [Dagger]

• | Rotate the tires. + *

#### 137 500 km (82,500 mi)

Rotate the tires. + *

#### 150 000 km (90,000 mi)

• | Rotate the tires. + *

• | Replace the engine air cleaner filter.

| This is an Emission Control Service.

#### 162 500 km (97,500 mi)

Rotate the tires. + *

#### 166 000 km (100,000 mi)

• | Inspect the spark plug wires except 2.4L Code T L4 engine.

| This is an Emission Control Service.

• | Replace the spark plugs.

| This is an Emission Control Service.

• | Change the 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 this vehicle is not used under any of these conditions, the fluid and filter do not require changing.

#### 240 000 km (150,000 mi)

• | Drain, flush and refill the cooling system or every 60 months since the last service, whichever comes first.

• | Inspect the hoses.

• | Clean the following components:

- | The radiator

- | The condenser

- | The pressure cap

- | The neck

• | Pressure test the cooling system and the pressure cap.

| This is an Emission Control Service.