GM Service Manual Online
For 1990-2009 cars only
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Ensure the vehicle is level.
  3. Clean the area around the front axle fill plug.

  4. Object Number: 598203  Size: SH
  5. Remove the front axle fill plug and the washer.
  6. Inspect the oil level.
  7. Specification
    The oil level should be between 0-13 mm (0-0.5 in) below the fill plug opening.

  8. If the level is low, add oil until the level is even with the bottom edge of the fill plug opening. Use the proper fluid. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.
  9. 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.

  10. Install the fill plug and the washer.
  11. Tighten
    Tighten the plug to 33 N·m (24 lb ft).

  12. Lower the vehicle.