GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 45059 Angle Meter
    • CH-46839 Rear Crossmember Centering Tool

Removal Procedure


    Object Number: 205596  Size: SH

    Important: Position the lift pads in order to minimize interference with the rear suspension support and the braces.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the 2 mufflers. Refer to Muffler Replacement in Engine Exhaust.
  4. Loosen the 6 bolts that retain the 2 rear suspension support braces to the body.
  5. Loosen the 2 bolts that retain the rear suspension support to the body.

  6. Object Number: 1365858  Size: SH
  7. Use paint or a scribe in order to mark the outline (1) of the differential carrier assembly mount (2) on the body.
  8. Use a jack in order to support the mount.

  9. Object Number: 1365861  Size: SH
  10. Remove and discard the 4 bolts (2) that retain the mount (1) to the body.
  11. Important: Do not allow the propeller shaft or the wheel drive shafts to touch the exhaust system.

  12. Lower the mount and the rear suspension support in order to access the bolts that retain the stabilizer shaft insulator brackets to the rear suspension support.

  13. Object Number: 205666  Size: SH
  14. Remove the bolt that retains the stabilizer shaft insulator bracket to the rear suspension support.
  15. Use a flat-bladed tool as a lever in order to remove the bracket from the rear suspension support.
  16. Remove the bracket from the insulator.
  17. Remove the insulator from the shaft.

Installation Procedure


    Object Number: 205666  Size: SH
  1. Install the insulator to the stabilizer shaft.
  2. Install the stabilizer shaft insulator bracket to the insulator.
  3. Install the bracket to the slot on the rear suspension support.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the bolt to the bracket.
  6. Tighten
    Tighten the bolt to 22 N·m (16 lb ft).


    Object Number: 1365861  Size: SH
  7. Raise the jack with the differential carrier assembly mount (1) and the rear suspension support.
  8. Align the mount with the match marks.
  9. Important: Do not tighten the bolts yet.

  10. Install 4 NEW bolts (2) in order to retain the mount to the body.

  11. Object Number: 1366217  Size: SH
  12. Fit the CH-46839 to the underbody.
  13. The CH-46839 locates into 19 mm (0.74 in) diameter body datum holes (1) positioned forward of the rear suspension support.

  14. With the aid of an assistant, position the rear suspension support.
  15. The locating pins (2) of the CH-46839 engage the alignment holes in the rear suspension support.

  16. Tighten the 2 bolts that retain the rear suspension support to the body.
  17. Tighten

    1. Tighten the bolts to 125 N·m (92 lb ft).
    2. Use the J 45059 in order to tighten the bolts an additional 40 degrees.
  18. Tighten the 4 bolts that retain the differential mount to the body.
  19. Tighten

    1. Tighten the bolts to 35 N·m (26 lb ft).
    2. Use the J 45059 in order to tighten the bolts an additional 60 degrees.
  20. Tighten the 6 bolts that retain the 2 rear suspension support braces to the body.
  21. Tighten
    Tighten the bolts to 70 N·m (52 lb ft).

  22. Remove the CH-46839 from the vehicle.
  23. Remove the jack from the vehicle.
  24. Install the 2 mufflers. Refer to Muffler Replacement in Engine Exhaust.
  25. Install the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  26. Lower the vehicle.