GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 37668-A Output Shaft Seal Installer (4401 & 4470 Transfer Case)
    • J 45380 Transfer Case Rear Bushing Remover and Installer

Removal Procedure


    Object Number: 746665  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement .

  3. Object Number: 715670  Size: SH
  4. Remove the rear output shaft seal.

  5. Object Number: 801274  Size: SH
  6. Inspect the rear output shaft bushing for scoring or wear.
  7. Remove the rear output shaft bushing, if required, using the J 45380 .
  8. 5.1. Install the finger section of the J 45380 in front of the bushing.
    5.2. Install the tube and forcing screw to the finger section. Ensure the forcing screw is backed out.
    5.3. Using a wrench on the forcing screw, remove the rear output shaft bushing.

Installation Procedure


    Object Number: 801307  Size: SH
  1. Using the J 45380 , install a NEW output shaft bushing.
  2. 1.1. Install the bushing or the finger section of the J 45380 .
    1.2. Install the finger section to the main body of the J 45380 .
    1.3. Position the bushing and tool to the case.
    1.4. Using a hammer and the J 45380 , install the bushing.

    Object Number: 765971  Size: SH
  3. Align the rear output shaft seal.

  4. Object Number: 747111  Size: SH
  5. Using the J 37668-A , install the rear output shaft seal.

  6. Object Number: 746665  Size: SH
  7. Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement .
  8. Inspect the transfer case fluid level. Refer to Transfer Case Fluid Replacement .
  9. Lower the vehicle. Refer to Lifting and Jacking the Vehicle .