GM Service Manual Online
For 1990-2009 cars only

Transfer Case Output Shaft Seal Replacement Front

Tools Required

    • J 44636-1 Front Output Shaft Seal Installer
    • J 44636-2 Front Output Shaft Seal Protector

Removal Procedure


    Object Number: 660273  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. If equipped, remove the transfer case shield. Refer to Shield Replacement .
  3. Remove front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  4. Remove the transfer case front output shaft dust seal.

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

Installation Procedure


    Object Number: 660276  Size: SH
  1. Install the J 44636-2 on the transfer case front output shaft.

  2. Object Number: 660278  Size: SH
  3. Install the transfer case front output shaft seal on the J 44636-2 .

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

  7. Object Number: 660276  Size: SH
  8. Remove the J 44636-2 from the transfer case front output shaft.

  9. Object Number: 660273  Size: SH
  10. Install the transfer case front output shaft dust seal.
  11. Install the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  12. Check the transfer case oil level and add oil as necessary. Refer to Oil Replacement .
  13. If equipped, install the transfer case shield. Refer to Shield Replacement .
  14. Lower the vehicle.

Transfer Case Output Shaft Seal Replacement Rear

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.

  3. Object Number: 165453  Size: SH
  4. Remove the rear output shaft seal.

Installation Procedure

Tools Required

J 29162 Rear Output Shaft Seal Installer.


    Object Number: 165453  Size: SH
  1. Install the seal.
  2. 1.1. Lubricate the seal mating surface with Automatic Transfer Case Oil GM P/N 12378396.
    1.2. Install the seal using theJ 29162 .
  3. Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.
  4. Check the transfer case oil level and add oil as necessary. Refer to Oil Replacement .
  5. Lower the vehicle.