GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 37668-A Output Shaft Seal Installer
    • J 45380 Transfer Case Rear Bushing Remover and Installer

Removal Procedure


    Object Number: 715670  Size: SH
  1. Raise and suitably support 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. Remove the rear propeller shaft.
  4. • For vehicles equipped with the one piece propeller shaft, refer to One-Piece Propeller Shaft Replacement in Propeller Shaft.
    • For vehicles equipped with the two piece propeller shaft, refer to Two-Piece Propeller Shaft Replacement in Propeller Shaft.
  5. Remove the transfer case rear output shaft seal.

  6. Object Number: 801274  Size: SH
  7. Inspect the rear output shaft bushing for scoring or wear.
  8. Remove the rear output shaft bushing if required, using the J 45380 .
  9. • Install the finger section of the J 45380 in front of the bushing.
    • Install the tube and forcing screw to the finger section. Ensure the forcing screw is backed out.
    • Using a wrench on the forcing screw, remove the rear output shaft bushing.

Installation Procedure


    Object Number: 801307  Size: SH
  1. Install a NEW rear output shaft bushing, if required, using the J 45380 .
  2. • Install the bushing or the finger section of the J 45380 .
    • Install the finger section to the main body of the J 45380 .
    • Position the bushing and tool to the case.
    • Using a hammer and the J 45380 , install the bushing.

    Object Number: 687288  Size: SH

    Important: When installing the rear output shaft seal in the transfer case, the locating tab should be facing up.

  3. Position the rear output shaft seal in the transfer case.
  4. Using the J 37668-A , install the rear output shaft to the transfer case.
  5. Install the rear propeller shaft.
  6. • For vehicles equipped with the one piece propeller shaft, refer to One-Piece Propeller Shaft Replacement in Propeller Shaft.
    • For vehicles equipped with the two piece propeller shaft, refer to Two-Piece Propeller Shaft Replacement in Propeller Shaft.
  7. Check the transfer case fluid level. Refer to Transfer Case Shield Replacement .
  8. Install the transfer case shield. Refer to Transfer Case Shield Replacement .
  9. Lower the vehicle.