GM Service Manual Online
For 1990-2009 cars only

Tools Required

DT 46612 Brushing, Seal Installer


    Object Number: 1224149  Size: SH
  1. Measure the axle direction play (1) of side gear and replace a side gear washer if it exceeds limit. Refer to Side Gear Axle Direction Play Table in Manual Transmission Specifications .

  2. Object Number: 1224156  Size: SH
  3. After checking driver (1) and side gear (2) for worn or scratched thrust adjusting shim, replace it if necessary.

Assembly Procedure


    Object Number: 1224138  Size: SH
  1. Insert the differential left side bearing (2).
  2. Important: Coat the inner parts of the bearing, washer, shim, etc. with gear fluid.

  3. Install the differential left side bearing using the bushing, DT 46612 , and a hammer.

  4. Object Number: 1224130  Size: SH
  5. Insert the speedometer drive gear (3).
  6. Insert the differential right side bearing (2).
  7. Install the right side bearing using the DT 46612  (1), and a hammer.

  8. Object Number: 1224141  Size: SH
  9. Insert the trust adjusting shims to the side gears.
  10. Install the side gears (1).
  11. Install the pinion gears and washers (2) simultaneously.

  12. Object Number: 1224140  Size: SH
  13. Insert the pinion gear shaft into the gear pin hole by rotating (2).
  14. Important: Use only new pin.

  15. Press the pinion gear pin using a pin punch and a hammer (1).

  16. Object Number: 1224162  Size: SH
  17. Fix the differential assembly to a vise.
  18. Notice: Refer to Fastener Notice in the Preface section.

  19. Install the differential ring gear (1) with the bolts (2).
  20. Tighten
    Tighten the bolts to 80-100 N·m (59-74 lb ft).

  21. Install the differential assembly. Refer to Transmission Assemble .