GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Refer to Vehicle Lifting Caution in the Preface section.

    Caution: Refer to Safety Glasses Caution in the Preface section.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the rear tyre and wheel assemblies. Refer to Tire and Wheel Removal and Installation.
  3. Drain differential oil. Refer to Differential Oil Replacement.
  4. Remove the intermediate exhaust assembly. Refer to Exhaust Crossover Pipe Replacement.
  5. Remove the propeller shaft and rubber coupling from differential flange. Refer to Propeller Shaft Replacement.
  6. Remove the wheel drive shaft assemblies. Refer to Wheel Drive Shaft Replacement.
  7. Support the differential with a suitable jack.

  8. Object Number: 1958888  Size: SH

    Important:  Nuts with micro-encapsulated thread sealant are single use parts and must be discarded after removal.

  9. Remove the differential retaining bolts and nuts (1), (2) and (3) from the rear suspension.
  10. Important:  With a suitable jack support the differential.

  11. Remove the differential from the vehicle.

Installation Procedure

    Important:  With a suitable jack raise and support the differential.

  1. Position the differential to the vehicle.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1958888  Size: SH

    Important:  With a suitable jack support the differential.

  3. Install the differential retaining bolts and nuts (1), (2) and (3) to the rear suspension.
  4. Tighten
    Tighten the differential to body retaining bolts and nuts (1) to 80 N-m (59 lb  ft).

    Tighten
    Tighten the differential to body retaining bolts and nuts (2) to 100 N-m (74 lb  ft).

    Tighten
    Tighten the differential to body retaining bolts and nuts (3) to 100 N-m (74 lb  ft).

  5. Install the propeller shaft and rubber coupling to the differential flange. Refer to Propeller Shaft Replacement.
  6. Install the wheel drive shaft assemblies. Refer to Wheel Drive Shaft Replacement.
  7. Install the intermediate exhaust assembly. Refer to Exhaust Crossover Pipe Replacement.
  8. Install the rear wheel assemblies. Refer to Tire and Wheel Removal and Installation.
  9. Fill differential oil. Refer to Differential Oil Replacement.
  10. Remove the safety stands.
  11. Lower the vehicle to the ground.