GM Service Manual Online
For 1990-2009 cars only

Transmission Housing Oil Seal Replacement Rear Oil Seal

Tools Required

    • J 6125-1B Slide Hammer
    • J 44732 Output Shaft Oil Seal Installer
    •  J 23129 Universal Seal Remover
    • J 8614-01 Pinion Flange Holder

Removal Procedure


    Object Number: 727452  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Propeller Shaft.
  3. Using the J 8614-01 on the transmission yoke, remove the yoke flange nut. Discard the nut.

  4. Object Number: 661231  Size: SH
  5. Remove the propeller shaft yoke.

  6. Object Number: 696799  Size: SH
  7. Remove the rear oil seal from the rear case using the J 6125-1B  (1) and the J 23129  (2) .

Installation Procedure


    Object Number: 696798  Size: SH

    Important: The seal installer will set the rear oil seal to the proper depth. Failure to use the seal installer will cause improper installation of the oil seal.

  1. Using the J 44732 install the rear oil seal. The seal installer will set the seal at the proper depth.

  2. Object Number: 661231  Size: SH
  3. Install the propeller shaft yoke.
  4. Use theJ 8614-01 in order to hold the transmission from rotating.
  5. 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.

  6. Install the new propeller shaft yoke nut.
  7. Tighten
    Tighten flange nut to 330 N·m(244 lb ft).

  8. Install the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Propeller Shaft.
  9. Inspect for the correct transmission oil level. Refer to Fluid Replacement .
  10. Lower the vehicle.

Transmission Housing Oil Seal Replacement Front Oil Seal

Tools Required

    • J 23907 Slide Hammer
    • J 44748 Seal Remover
    •  J 44731 Input Shaft Oil Seal Installer

Removal Procedure


    Object Number: 689675  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Propeller Shaft.
  3. Remove the transmission. Refer to Transmission Replacement .
  4. Important: The clutch actuator hose can remain attached to the clutch actuator. Disconnecting the hose from the clutch actuator will let the hydraulic fluid drain from the clutch hydraulic system.

  5. Remove the 2 clutch actuator bolts or nuts. Do not disconnect the hose from the actuator.
  6. Remove the clutch actuator from the input shaft.

  7. Object Number: 696800  Size: SH
  8. Remove the front oil seal using the J 23907  (2) and the J 44748  (1) .

Installation Procedure


    Object Number: 694468  Size: SH
  1. Place the seal in the front case with part numbers facing out.
  2. Using the J 44731 install the input shaft seal.

  3. Object Number: 689675  Size: SH
  4. Install the clutch actuator.
  5. Tighten the clutch actuator bolts or nuts to 8 N·m(71 lb in)
  6. Install the transmission. Refer to Transmission Replacement .
  7. Inspect the fluid level. Refer to Fluid Replacement .
  8. Install the rear propeller. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Driveline/Axle-Propeller Shaft.
  9. Lower the vehicle.