GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • KM-525 Installer
    • KM-522 Installer
    • KM-520 Remover/Installer

    Object Number: 1251771  Size: SH
  1. Install the speedometer drive gear onto the differential gear housing using the KM-525  (1).

  2. Object Number: 1251774  Size: SH
  3. Install both of the differential bearings using the KM-522  (1).

  4. Object Number: 1251766  Size: SH
  5. Install the side gears and the side thrust washers into the differential housing.
  6. Install the differential pinion gears and the differential pinion gear washers into the differential housing.

  7. Object Number: 1251762  Size: SH
  8. Install the pinion gear shaft into the differential housing.

  9. Object Number: 1251776  Size: SH
  10. Install the pinion gear shaft lock pin into the differential housing and the pinion gear shaft.
  11. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1251756  Size: SH
  12. Install the ring gear and the ring-gear bolts.
  13. Tighten
    Tighten the ring-gear bolts to 70 N·m (52 lb ft).


    Object Number: 1251753  Size: SH
  14. Install the differential assembly into the transaxle case.

  15. Object Number: 1251751  Size: SH
  16. Install the right-side bearing retainer and the right side bearing retainer and the right side bearing retainer bolts.
  17. Tighten
    Tighten the right-side bearing retainer bolts to 25 N·m (18 lb ft).


    Object Number: 1251750  Size: SH
  18. Install the bearing-adjusting ring.
  19. Tighten the bearing-adjusting ring using the KM-520  (1).
  20. Tighten
    Tighten the bearing adjusting ring until there is no end play with the differential.

  21. Adjust the preload on the differential bearings.
  22. Specification

        • Used Bearings: 1 N·m (9 lb in) is required to rotate the differential one revolution per second.
        • New Bearings: 2 N·m (18 lb in) is required to rotate the differential one revolution per second.

    Tighten or loosen the bearing ring adjuster to get the required preload on the bearings.


    Object Number: 1251747  Size: SH
  23. Install the bearing-adjusting ring-retainer plate and the bearing-adjusting ring-retainer plate bolt.
  24. Tighten
    Tighten the bearing-adjusting ring-retainer plate bolt to 5 N·m (44 lb in).


    Object Number: 1251746  Size: SH
  25. Install the differential cover gasket, the differential cover, and the differential cover bolts.
  26. Tighten
    Tighten the differential cover bolts to 40 N·m (30 lb ft).