GM Service Manual Online
For 1990-2009 cars only

Transmission Housing Oil Seal Replacement - Rear 2WD

Tools Required

    • J 8614-01 Pinion Flange Holder
    • J 6125-1B Slide Hammer
    • J 22834-A Rear Extension Housing Oil Seal Installer
    • J 23129 Universal Seal Remover

Removal Procedure


    Object Number: 775218  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
  3. If required, remove the following:
  4. 3.1. The main shaft nut
    3.2. The prop shaft yoke washer
    3.3. The main shaft washer
    3.4. The yoke

    Object Number: 696799  Size: SH
  5. Remove the rear seal using J 6125-B (1) and J 23129 (2).

Installation Procedure


    Object Number: 789447  Size: SH
  1. Using J 22834-A install the NEW rear oil seal.

  2. Object Number: 775218  Size: SH
  3. If required, install the following:
  4. 2.1. The yoke
    2.2. A NEW main shaft washer
    2.3. A NEW prop shaft yoke washer
    2.4. The main shaft nut

    Object Number: 727452  Size: SH
  5. If required, use J 8614-01 in order to keep the keep yoke from rotating.
  6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Tighten the main shaft nut.
  8. Tighten
    Tighten the nut to 441 N·m (325 lb ft).

  9. Install the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
  10. Check the transmission fluid level. Add if necessary.
  11. Lower the vehicle.