GM Service Manual Online
For 1990-2009 cars only
  1. Place the selector arm plates and the shift shaft in neutral position (centered).
  2. Rotate the shift shaft until the selector arm disengages from the selector arm plates and the roll pin is accessible.

  3. Object Number: 38646  Size: SH
  4. Drive out the selector arm roll pin.

  5. Object Number: 38647  Size: SH
  6. Remove the following components from the cover:
  7. • The shift shaft
    • The shift forks
    • The shift fork plates
    • The selector arm interlock plate
    • The roll pin

    Object Number: 38649  Size: SH
  8. Remove the O-ring seal.

  9. Object Number: 38650  Size: SH
  10. Remove the nylon inserts and the shift fork plates from the shift forks.