GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 41505 Output Shaft Seal Installer
    • J 6125-1B Slide Hammer
    • J 23129 Universal Seal Remover
    • J 36850 Transmission Assembly Lubricant

Removal Procedure


    Object Number: 749709  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Place a drain pan under the vehicle.
  3. Remove the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Propeller Shaft.
  4. Using the J 6125-1B  (1) and the J 23129  (2), remove the output shaft seal (3) from the extension housing (4).
  5. Inspect the case extension housing for damage. Replace the extension housing if necessary. Refer to Case Extension Assembly Replacement .

Installation Procedure


    Object Number: 744178  Size: SH
  1. Lubricate the inside diameter of the new seal with J 36850 .
  2. Use the J 41505 (1) with a soft faced mallet to install the seal (2).
  3. Install the seal (2) to the extension housing (3).
  4. Install the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Propeller Shaft.
  5. Remove the drain pan and lower the vehicle.
  6. Fill the transmission to the proper level with Dexron® III transmission fluid. Refer to Transmission Fluid Check .