GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 45012 Holding Fixture

Removal Procedure

  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 Rear 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. Caution: 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. Object Number: 1850668  Size: SH
  12. Remove the case extension housing bolts.
  13. Remove the case extension housing.
  14. Remove the case extension housing seal.

Installation Procedure


    Object Number: 1850668  Size: SH
  1. Install the case extension housing seal.
  2. Install the case extension housing.
  3. Install by hand the case extension housing bolts.
  4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1850669  Size: SH
  5. Secure the case extension housing bolts in the specified sequence.
  6. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 1850665  Size: SH
  7. Install the prop shaft flange.
  8. Caution: 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.

    Note: Use a NEW propeller shaft flange nut.

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

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