GM Service Manual Online
For 1990-2009 cars only

1st/2nd, 3rd/4th, 5th/6th Synchronizers

Important: Synchronizer components are not interchangeable. Keep all the synchronizer components separate. The synchronizer hubs and the sliding sleeves are a selected assembly. Keep the hubs and the sliding sleeves together as originally assembled.


    Object Number: 4810  Size: SH
  1. Scribe a mark on the synchronizer hub and on the sleeve. This will help you to reinstall the parts in the same position.

  2. Object Number: 38443  Size: SH
  3. Remove the synchronizer springs. Use a small-blade screwdriver.

  4. Object Number: 38444  Size: SH
  5. Remove the synchronizer sleeve and the keys from the hub.