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 .
Engine Oil and Oil Filter Change
Replace the engine oil and the engine oil filter.
| • | Refer to Engine Oil and Oil Filter Replacement in Engine Mechanical-3.1L. |
| • | Refer to Engine Oil and Oil Filter Replacement in Engine Mechanical-3.8L. |
Engine Oil Quality United States and Canada
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.
Engine Oil Viscosity, United States and Canada
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.
Oil Viscosity Recommendation for 3100 LG8
| • | SAE 5W-30 is the only viscosity grade recommended for your vehicle. |
| SAE 5W-30 is the only viscosity grade recommended for your vehicle. |
| For the 3100 LG8 engine, use only oils which have the API Starburst symbol and which are also identified as SAE 5W-30. |
| If the temperature range is 0°F (-18°C) or above SAE 10W-30 oil which has the API Starbust symbol is acceptable if SAE 5W 30 oils is not available. Areas where the temperature falls below -20°F (-29°C), it is recommended either an SAE 5W-30 synthetic oil or and SAE 0W-30 oil. Both will provide easier cold starting and better protection for the engine at extremely low temperatures. Do not use other viscosity grade oils, such as SAE 10W-40 or SAE 20W-50 under any conditions. |
| 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. |
Oil Viscosity Recommendation for 3800 L36 and 3800 L67
| • | For the 3800 L36 or the 3800 L67 engine, SAE 10W-30 is the recommended viscosity. Engine oil viscosity (thickness) has an effect on the fuel economy and the cold-weather operation (engine starting and oil flow). Lower viscosity engine oils can provide better fuel economy and cold-weather performance. However, higher temperature weather conditions require higher viscosity engine oils for satisfactory lubrication. When the temperature is consistently lower than 16°C (60°F), 5W-30 may be used. SAE 20W-50 or oils of other viscosity rating or quality designations are NOT recommended for use in any GM vehicle at any time. |
Engine Oil Quality and Viscosity, (Other Than The United States and Canada)
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.
Important: When adding to, or changing the engine oil, use ONLY oils of the proper quality. In countries other than the United States and Canada, it may be difficult to find engine oils that display the API STARBURST symbol certifying the oil is for use in gasoline engines. If you are unable to find engine oils displaying the API STARBURST symbol, use engine oils that meet API Service SJ and/or ACEA A1-96, ACEA A2-96, or ACEA A3-96 requirements as shown in the chart above.
Tire and Wheel Inspection and Rotation
Check the tires for abnormal wear or damage. Rotate the tires to equalize the wear and obtain maximum tire life. Irregular or premature wear may indicate a problem. Refer to Tire Rotation in Suspension.
If irregular or premature tire wear exists, refer to Tire Diagnosis - Irregular or Premature Wear in Suspension General Diagnosis.
Accessory Drive Belt Inspection
Inspect the drive belt according to the maintenance schedule intervals.
For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .
Inspect the drive belt for the following conditions:
| • | Cracks |
| • | Fraying |
| • | Wear |
| • | Proper tension |
Replace as needed. (Belts can have many small cracks in individual ribs without affecting the performance.) Refer to the following procedures:
| • | Drive Belt Replacement in Engine Mechanical-3.1L |
| • | Drive Belt Replacement in Engine Mechanical-3.8L (L36) |
Brake System Inspection
Inspect brake lines and hoses for proper hook-up binding, leaks, cracks or chafing. Refer to Brake Pipe and Hose Inspection in Hydraulic Brakes. Inspect disc brake pads for wear. Refer to Brake Pad Inspection in Disc Brakes. Inspect the rotors for poor surface condition. Inspect other brake system components, including the brake calipers and the parking brake. Check the parking brake adjustment. The brakes may need to be inspected more often if the customer's driving habits or conditions result in frequent braking.
Automatic Transaxle Service
Change the transaxle fluid and the transaxle fluid filter according to the maintenance schedule intervals. Use the proper fluid. For the fluid and filter changing procedure, refer to Transmission Fluid Check in Transmission/Transaxle-4T65-E.
For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .
Spark Plug Replacement
Replace the spark plugs according to the maintenance schedule intervals.
For the spark plug replacement procedure, refer to Spark Plug Replacement for a 3.1L engine.
For the spark plug replacement procedure, refer to Spark Plug Replacement for a 3.8 L engine.
For information on the correct type of spark plug, refer to Maintenance Items .
For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .
Spark Plug Wire Inspection
Clean the spark plug wires and inspect for burns, cracks or other damage. Ensure that the fit between the spark plug wire boots at the spark plugs and at the coils is snug. Replace the spark plug wires as needed. Refer to Spark Plug Wire Inspection for a 3.1 L engine.
Refer to Spark Plug Wire Inspection for a 3.8 L engine.
Air Cleaner Filter Inspection and Replacement
Replace the air cleaner filter according to the maintenance schedule intervals. For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .
For information on the correct type of air cleaner filter refer to Maintenance Items .
For air cleaner filter replacement procedure, refer to the following procedures:
| • | Air Cleaner Element Replacement in Engine Controls-3.1L |
| • | Air Cleaner Element Replacement in Engine Controls-3.8L |
Supercharger Oil Level Inspection
Inspect the supercharger oil level and add oil if necessary. Refer to Supercharger Oil Level Inspection in Engine Mechanical-3.8L.
Cooling System Service
Drain, flush and refill the cooling system with new coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .
