For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .

The following text and illustrations describe the details of the required scheduled maintenance services.

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

For the engine oil and filter changing procedure, Engine Oil and Oil Filter Replacement in Engine Mechanical.

For information on the correct engine oil quality and viscosity, refer to Engine Oil Quality and Engine Oil Viscosity.

Oils of the proper quality for the vehicle can be identified by looking for the STARBURST symbol. The STARBURST symbol indicates that the oil has been certified by the American Petroleum Institute (API), and is preferred for use in gasoline engines.

Notice: Using oils of any viscosity other than those recommended could result in engine damage. When choosing an oil, consider the range of temperatures the vehicle will be operated in before the next oil change. Then, select the recommended oil viscosity.

The recommended oil viscosity for all vehicles when the temperature is above 0°F (-18°C) is SAE 10W-30.

Engine oil viscosity (thickness) has an effect on the fuel economy and the cold-weather operation (starting and oil flow). Lower viscosity engine oils can provide better fuel economy and cold-weather performance. However, higher temperature weather condition require higher viscosity engine oils for satisfactory lubrication. When the temperature will be very cold and never above 60°F °C), SAE 5W-30 should be used in all models. SAE 20W-50 or oils of other viscosity rating or quality designations are NOT recommended for use in any Cadillac vehicles at any time.

Notice: Do not lubricate the parking brake cables. Lubrication destroys the plastic coating on the cable.

Lubricate transaxle shift linkage. Lubricate the parking brake guides, underbody contact points and linkage.

Refer to the illustration for the location of the grease fittings.

Important: Wipe off all dirt from the grease fitting before lubricating the joint. Ball joints should not be lubricated unless their temperature is -12°C (10°F) or higher. During cold weather, the ball joint should be allowed to warm up as necessary before being lubricated. Use a low-pressure grease gun on all joints to prevent seal damage.

Apply grease slowly to the rear tie rod ends (1) while watching the grease seal. Apply grease until grease is seen bleeding from the seal. If the seal expands but no grease is seen, do not apply any more grease and allow time for the grease to bleed from the seal.

Check the tires for abnormal wear or damage. Rotate the tires to equalize the wear and obtain maximum tire life.

Inspect the accessory drive belts for the following

Replace as needed. (Belts can have many small cracks in individual ribs without affecting the performance.).

Change both the fluid and the filter according to the maintenance schedule intervals. For maintenance schedule information, refer to Maintenance Schedule .

For the fluid and filter changing procedure Transmission Fluid Check

Replace the spark plugs according to the maintenance schedule intervals with the correct type. For maintenance schedule information, refer to Maintenance Schedule .

For information on the correct type of spark plug, refer to Maintenance Items .

For the spark plug replacement procedure, refer to Spark Plug Replacement in Engine Electrical.

Clean the spark plug wires and inspect for burns, cracks or other damage. Check the wire boot fit at the coils and at the spark plugs. Replace wires as needed.

Replace the air cleaner filter according to the maintenance schedule intervals with the correct type. For maintenance schedule information, refer to Maintenance Schedule .

For information on the correct type of air cleaner filter, refer to Maintenance Items .

For the air cleaner filter replacement procedure, refer to Air Cleaner Element Replacement in Engine Controls.

Inspect the following components for damage or leaks:

Inspect the fuel cap gasket for an even filler neck imprint and any damage. Replace parts as needed. Periodic replacement of the fuel filter is not required.