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 transfer case shield. 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 transfer case fill plug.

  5. Object Number: 660282  Size: SH

    Important: When draining the transfer case fluid, always use an approved container for draining.

  6. Remove the transfer case drain plug.

Installation Procedure


    Object Number: 660282  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. In stall the transfer case drain plug.
  2. Tighten
    Tighten the transfer case drain plug to 20 N·m (15 lb ft).


    Object Number: 660281  Size: SH
  3. Fill the transfer case with the approved fluid.
  4. Tighten
    Tighten the transfer case fill plug to 20 N·m (15 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.