GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 45012 Holding Fixture
    • J 45000 Seal Remover
    • J 37212 Front Output Shaft Seal Installer

Removal Procedure

    Danger: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the exhaust system. Refer to Exhaust System Replacement.
  3. Remove the drive shaft. Refer to Propeller Shaft Replacement.
  4. Support the transmission with a suitable jack.
  5. Remove the transmission mount assembly. Refer to Transmission Mount Replacement.

  6. Object Number: 1850663  Size: SH
  7. Install the propeller shaft flange holding fixture J 45012 .
  8. Notice: Do not reuse the flange nut. Reusing the flange nut may cause damage to the transmission.

  9. Remove and discard the propeller shaft flange nut.
  10. Remove the propeller shaft flange.
  11. Important: Be careful not to scrape or gouge the case extension housing while removing the output shaft seal.


    Object Number: 1850666  Size: SH
  12. Use the J 45000 to remove the output shaft seal from the case extension housing.

Installation Procedure


    Object Number: 1850667  Size: SH
  1. Lubricate the new seal with clean transmission fluid.
  2. Use the J 37212 to install the output shaft seal to the case extension housing.

  3. Object Number: 1850665  Size: SH
  4. Install the prop shaft flange.
  5. Notice: Refer to Fastener Notice in the Preface section.

    Notice: Stake the flange nut onto the output shaft. Use the two staking grooves on the shaft to locate the staking points. Failure to stake the flange nut may result in damage to the transmission.

    Important: Use a NEW propeller shaft flange nut.

  6. Install the NEW propeller shaft flange nut.
  7. Tighten
    Tighten the nut to 105 N·m (77 lb ft).

  8. Remove the propeller shaft flange holding fixture J 45012 .
  9. Install the transmission mount assembly. Refer to Transmission Mount Replacement.
  10. Remove the transmission jack.
  11. Install the drive shaft. Refer to Propeller Shaft Replacement.
  12. Install the exhaust system. Refer to Exhaust System Replacement.
  13. Lower the vehicle.