GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 33381-A Transmission Front Differential Installer and Remover


    Object Number: 16353  Size: SH
  1. Insert the sun gear bearing (676) into the differential carrier (678).
  2. Insert the final drive sun gear (675) into the carrier (678) with the notch on the final drive sun gear (675) facing upward.

  3. Object Number: 16355  Size: SH
  4. Insert the final drive sun gear bearing (674) into the final drive internal gear (673). Retain with TRANSJEL™ or equivalent.

  5. Object Number: 16359  Size: SH
  6. Insert the final drive internal gear (673) onto the carrier assembly (678).

  7. Object Number: 16357  Size: SH
  8. Insert the selective washer (680) onto the front differential carrier (678). Retain with TRANSJEL™ or equivalent.
  9. Insert the case thrust bearing (681) onto the front differential carrier. Retain with TRANSJEL™ or equivalent.

  10. Object Number: 15887  Size: SH
  11. Set J 33381-A to the position marked 3T40 Final Drive Install/Remove.
  12. Install the J 33381-A into the differential carrier (678). Tighten the handle.

  13. Object Number: 16360  Size: SH

    Important: Align the front differential carrier and the final drive internal gear assembly (673) with the case internal splines.

  14. Place the differential carrier and the internal gear into the transmission case.
  15. Remove J 33381-A .

  16. Object Number: 16260  Size: SH
  17. Inspect the final drive internal gear spacer (671) for damage.
  18. Inspect the front differential carrier spacer retainer ring (647) for damage.

  19. Object Number: 16362  Size: SH

    Important: Orient the spacer as shown.

  20. Insert the internal gear spacer (671) into the case.
  21. Insert the retainer ring (647) into the case. Position the ring relative to the spacer as shown.