GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 44636-1 Seal Installer
    • J 44636-2 Seal Protector

Removal Procedure


    Object Number: 660273  Size: SH
  1. Raise 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 front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  4. Remove the dust seal.

  5. Object Number: 660275  Size: SH
  6. Remove the front output shaft seal.

Installation Procedure


    Object Number: 660276  Size: SH

    Important: When installing the new front output shaft seal, install the seal dry.

  1. Install the J 44636-2 on the front output shaft.

  2. Object Number: 660278  Size: SH

    Important: When installing the new front output shaft seal, ensure that it is seated squarely in the transfer case.

  3. Install the front output shaft seal on J 44636-1 .

  4. Object Number: 660279  Size: SH
  5. Using the J 44636-1 , install the front output shaft seal.

  6. Object Number: 660273  Size: SH
  7. Install the dust seal.
  8. Install the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  9. Check the fluid level of the transfer case. Refer to Transfer Case Fluid Replacement .
  10. Install the transfer case shield. Refer to Transfer Case Shield Replacement .
  11. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.