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Instructions below from the GM service manual. On the 2001 the filter is located on the rear side of the motor sort of behind the right front wheel. You will need the correct size oil filter wrench to remove the filter with. Thanks
Engine Oil and Oil Filter Replacement Removal Procedure
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten Tighten the oil pan drain bolt to 26 N·m (19 lb ft).
Sorry, I have no clue why the picture is not posting. It must be a problem with the web site. If you have the car up in the air, the filter is on the passenger side on the back side of the motor. They are pretty hard to get to because of where they are mounted. You need to reach in behind the passenger side front tire and out your hand in the large opening in the frame where the right front tie rod is to reach the filter to take it loose and remove it. I am posting the complete operation for you below, from beginning to end. Thanks
See Figures 1, 2, 3 and 4
The engine oil dipstick is also the fill cap on the 2.2L engine and is located in front of the engine between the engine and the radiator.
The engine oil dipstick on the 2.3L and 2.4L engines is located in the rear of the engine between the engine and the firewall.
Engine oil level should be checked every time you put fuel in the vehicle or are under the hood performing other maintenance.
See Figures 5 through 12
The oil and filter should be changed every 7,500 miles (12,500 km) under normal service and every 3,000 miles (5,000 km) under severe service.
The engine oil and oil filter should be changed at the recommended intervals on the Maintenance Chart. Though some manufacturer's have at times recommended changing the filter only at every other oil change, It is recommended that you always change the filter with the oil. The benefit of fresh oil is quickly lost if the old filter is clogged and unable to do its job. Also, leaving the old filter in place leaves a significant amount of dirty oil in the system.
The oil should be changed more frequently if the vehicle is being operated in a very dusty area. Before draining the oil, make sure that the engine is at operating temperature. Hot oil will hold more impurities in suspension and will flow better, allowing the removal of more oil and dirt.
It is a good idea to warm the engine oil first so it will flow better. This can be accomplished by 15-20 (24-32 km) miles of highway driving. Fluid which is warmed to normal operating temperature will flow faster, drain more completely and remove more contaminants from the engine.
If the vehicle is not resting on level ground, the oil level reading on the dipstick may be slightly off. Be sure to check the level only when the vehicle is sitting level.