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 .
Replace the engine oil and the engine oil filter.
• | If the vehicle has a 3100 L82 (VIN M) engine with an oil cooler (KC4), refer to Engine Oil and Oil Filter Replacement in Engine Mechanical. |
• | If the vehicle has a 3100 L82 (VIN M) engine without an oil cooler (KC4), refer to Engine Oil and Oil Filter Replacement in Engine Mechanical. |
• | If the vehicle has a 3800 L36 (VIN K) engine, refer to Engine Overhaul in Engine Mechanical. |
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 (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 condition require higher viscosity engine oils for satisfactory lubrication.
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: If the vehicle is operated in an area where the temperature falls below -29°C (-20°F), consider using a SAE 5W-30 synthetic oil or a SAE 5W-30. Both will provide easier cold starting and better protection for the vehicle's engine at extremely low temperatures.
• | If the vehicle is equipped with a 3100 (VIN M) engine, the recommended SAE engine oil viscosity is 5W-30, however, 10W-30 may be used if the outside air temperature is higher than -18°C (0°F). Do not use other viscosity oils, such as SAE 20W-50. |
• | If the vehicles equipped with 3800 (VIN K) engine, the recommended oil viscosity is 10W-30, however, 5W-30 may be used if the outside air temperature is lower than 16°C (60°F). Do not use other viscosity oils, such as SAE 20W-50. |
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.
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.
Rotate the tires to equalize the wear and obtain maximum tire life. Refer to Tire Rotation in Tires and Wheels.
Check the tires for abnormal wear or damage. If irregular or premature tire wear exists, refer to Radial Tire Lead/Pull Correction in Suspension General Diagnosis.
Inspect brake lines and hoses for proper hook-up binding, leaks, cracks or chafing. Refer to Brake 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, the parking brake, etc. 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.
Replace the air cleaner filter according to the maintenance schedule intervals.
For maintenance schedule information, refer to Maintenance Schedule .
For air cleaner filter replacement procedure, refer to Air Cleaner Element Replacement .
Change the transaxle fluid and the transaxle fluid filter according to the maintenance schedule intervals. For the 4T60E refer to Automatic Transmission Fluid Filter and Seal Replacement and for the 4T65E refer to Automatic Transmission Fluid Filter and Seal Replacement .
For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .
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:
• | Cracks |
• | Fraying |
• | Wear |
• | Proper tension |
• | If the vehicle has a 3100 L82 (VIN M) engine, refer to Drive Belt Excessive Wear Diagnosis in Engine Mechanical. |
• | If the vehicle has a 3800 L36 (VIN K) engine, refer to Drive Belt Excessive Wear Diagnosis in Engine Mechanical. |
Periodic replacement of the fuel filter is not required.
Inspect the following components for damage or leaks:
• | Fuel tank |
• | Fuel tank cap |
Inspect the fuel tank cap seal for an uneven filler neck imprint and any damage. |
• | Fuel lines |
• | Fuel rail |
• | Fuel injectors |
For fuel system diagnosis information, refer to Fuel System Diagnosis in Engine Controls-3.8L.
For fuel system diagnosis information, refer to Fuel System Diagnosis in Engine Controls-3.1L.
Drain, flush and refill the cooling system with new coolant. Refer to Fluid and Lubricant Recommendations . Refer to Cooling System Draining and Filling in Engine Cooling.
For time and/or mileage intervals of scheduled maintenance items, refer to Maintenance Schedule .
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.
• | If the vehicle has a 3100 L82 (VIN M) engine, refer to Spark Plug Wire Harness Replacement in Engine Electrical. |
• | If the vehicle has a 3800 L36 (VIN K) engine, refer to Spark Plug Wire Harness Replacement in Engine Electrical. |
Replace the spark plugs 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 spark plug, refer to Maintenance Items .
• | If the vehicle has a 3100 L82 (VIN M) engine, refer to Spark Plug Replacement in Engine Electrical. |
• | If the vehicle has a 3800 L36 (VIN K) engine, refer to Spark Plug Replacement in Engine Electrical. |