GM Service Manual Online
For 1990-2009 cars only

Tools Required

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

Removal Procedure


    Object Number: 715670  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.
  3. Notice: Do not damage the sealing surfaces of the transfer cases or the shafts when prying the seals for removal. Damaging the sealing surface may cause leakage or require replacement of the damaged component.

  4. Remove the transfer case rear output shaft seal.

  5. Object Number: 801274  Size: SH
  6. Inspect the rear output shaft seal bushing for scoring or wear.
  7. Remove the rear output shaft bushing if required, using the J 45380 .
  8. • 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: Ensure the drain hole on the boot of the rear output shaft seal is facing down toward the ground.

  3. Using the J 37668-A , install the transfer case rear output shaft seal.
  4. Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.
  5. Check the transfer case fluid level. Refer to Transfer Case Fluid Replacement .
  6. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.