GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: When servicing the transfer case, use only hand tools when removing the fill or drain plugs.


    Object Number: 660281  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the shield, if needed. Refer to Transfer Case Shield Replacement .
  3. .

    Important: If the drain or fill plugs are damaged and need to be replaced, use only replacement plugs that are made from aluminum.

  4. Remove the fill plug from the transfer case.

  5. Object Number: 660282  Size: SH

    Important: When draining the transfer case oil, always the proper container for draining.

  6. Remove the drain plug with the transfer case.

Installation Procedure


    Object Number: 660281  Size: SH

    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.

  1. Install the drain plug.
  2. Tighten
    Tighten the drain plug to 15 N·m (11 lb ft).


    Object Number: 660282  Size: SH
  3. Fill the transfer case with the proper oil.
  4. Tighten
    Tighten the oil fill plug to 15 N·m (11 lb ft).

  5. Install the transfer case shield. Refer to Transfer Case Shield Replacement .
  6. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.