GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 6125-B Slide Hammer
    • J 23129 Converter Housing Seal and Extension Housing Oil Seal Remover
    • J 35538 Adapter Case Seal Installer
    • J 36850 Transjel® Transmission Assembly Lubricant

Removal Procedure

  1. Raise the vehicle. Support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the transmission with a suitable hydraulic jack.
  3. Remove the transfer case from the vehicle.

  4. Object Number: 166331  Size: SH
  5. Remove the transfer adapter case seal (1) from the transfer adapter case using the J 23129 and the J 6125-B .
  6. Inspect the transfer adapter case for cracks and other damage. Replace as necessary.

Installation Procedure


    Object Number: 166339  Size: SH
  1. Apply a thin coat of J 36850 to the transfer adapter case seal surface.
  2. Install the new transfer adapter case seal (1) into the transfer adapter case using a J 35538 .
  3. Apply J 36850 to the new transfer adapter case seal lip.
  4. Install the transfer case into the vehicle. Refer to Transfer Case Replacement in Driveline/Axle.
  5. Remove the hydraulic jack from under the transmission.
  6. Lower the vehicle.