GM Service Manual Online
For 1990-2009 cars only

Tool Required

    • J 23907 Slide Hammer with Bearing Adapter
    • J 25070 Heat Gun - 500-750F
    • J 29369-2 Bushing and Bearing Remover - 2-3 in
    • J 42155 Getrag Axle Differential Housing Lifting Tool
    • J 42173 Getrag Axle Ring Gear Holder
    • J 42194 Getrag Axle Bearing Race Remover

    Object Number: 71501  Size: SH
  1. Remove the differential mount and bolts.

  2. Object Number: 71498  Size: SH
  3. Remove the drain plug (1) and washer (2) and allow the fluid to drain.

  4. Object Number: 177939  Size: SH
  5. Remove the fill plug (3), lubricant tag (2), and washer (1).

  6. Object Number: 58042  Size: SH
  7. Remove the vehicle speed sensor and bolt.

  8. Object Number: 58043  Size: SH
  9. Remove the cover - left (3) and bolts (2).
  10. Remove the O-ring (4) and oil seal (1) from the cover.
  11. Remove the magnet (5) from the carrier.

  12. Object Number: 708074  Size: SH
  13. Install the differential assembly (1) onto the J 42173  (2).
  14. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  15. Install 4 M8 x 1.25 bolts (3).
  16. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 58038  Size: SH
  17. Remove the cover - right (3) and bolts (2) from the differential.
  18. Remove the O-ring (4) and oil seal (1) from the cover.

  19. Object Number: 58049  Size: SH

    Important: Note and mark the location of the cover - rear bolt/stud for assembly.

  20. Remove the cover-rear (2), bolts (3), bolt/stud (4), and O-ring (1).

  21. Object Number: 59255  Size: SH
  22. Install 2 M10 x 1.5 nuts onto the transmission stud (1). Remove the stud from the differential.
  23. Remove the bolts (2) and mount (3) from the differential. Note and mark the position and direction of the mount.

  24. Object Number: 354419  Size: SH
  25. Remove the C-clip (1) from the output shaft.

  26. Object Number: 58046  Size: SH
  27. Install the J 42155 into the groove of the output shaft in order to remove the differential case assembly.

  28. Object Number: 58582  Size: SH
  29. Remove the pinion housing/cage bolts (1).

  30. Object Number: 58579  Size: SH
  31. Heat the differential housing, around the pinion housing, using J 25070 . Heating the housing will ease in pinion removal.

  32. Object Number: 58585  Size: SH
  33. Remove the pinion housing/cage assembly (2) and shims (1) from the differential housing. Mark or tag the shims for assembly.
  34. Locate 2 screwdrivers or pry bars to the flange area of the pinion housing/cage to ease in removal.


    Object Number: 63600  Size: SH
  35. Install the J 42194 into the cover - right in order to remove the bearing race and shims.
  36. Position the cover - right into a hydraulic press.

  37. Object Number: 354444  Size: SH
  38. Using a hydraulic press, remove the bearing race (1) and shims (2). Mark or tag the shims for assembly.

  39. Object Number: 64186  Size: SH
  40. Install the J 29369-2 into the cover - left bearing.
  41. Install the J 23907 to the J 29369-2 in order to remove the bearing.

  42. Object Number: 354442  Size: SH
  43. Remove the bearing (1).

  44. Object Number: 63606  Size: SH
  45. Install the J 42194 into the differential housing, behind the left bearing race, in order to remove the bearing race and shim.
  46. Position the housing into a hydraulic press.

  47. Object Number: 708085  Size: SH
  48. Using a hydraulic press, remove the race (2) and shim or shims (1) from the differential housing. Mark or tag the shims for assembly.