GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Yukon - 4WD 🢒 Driveline/Axle 🢒 Transfer Case 🢒 Adapter Replacement

Removal Procedure
  1. Remove the transfer case. Refer to Transfer Case Replacement .
  2. Remove the bolts securing the adapter to the transmission.
  3. Raise the rear of the transmission slightly.
  4. Remove the adapter from the transmission.
  5. Remove the seal.

Installation Procedure
  1. Install the new seal to the transmission.

    2. Lubricate the seal lips with the transmission oil or the petroleum jelly.

  2. Install the adapter to the transmission.

    3. 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.

  3. Install the six bolts securing the adapter to the transmission.

    4. Tighten
    Tighten the adapter bolts to 45 N·m (33 lb ft).

  4. Install the transfer case. Refer to Transfer Case Replacement .