GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: Refer to Differential Housing Cover and Gasket Removal Notice in the Preface section.

Important: The gasket and rear cover are reusable. Replace them only if they are damaged.


    Object Number: 1340275  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the bolt for the rear brake pipe retainer.

  3. Object Number: 1373103  Size: SH
  4. Remove the bolt for the mounting bracket.

  5. Object Number: 1373107  Size: SH
  6. Remove the mounting brackets from the rear axle cover.
  7. Position a suitable drain pan under the axle.
  8. Remove the rear cover mounting bolts.
  9. Remove the rear cover and gasket from the differential housing.
  10. Drain the rear axle.

Installation Procedure


    Object Number: 1373107  Size: SH
  1. Clean the contact area for the rear cover and gasket and the differential housing.
  2. Install the retainer and mounting bracket for the rear brake pipe.

  3. Object Number: 1373103  Size: SH
  4. Install the mounting bolt for the mounting bracket.
  5. Finger tighten the bolt for the mounting bracket.
  6. Install the axle housing cover and gasket.
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Install the mounting bolts.
  9. Tighten
    Tighten the mounting bolts to 30 N·m (22 lb ft).


    Object Number: 1340275  Size: SH
  10. Install the retaining bolt for the brake pipe retainer.
  11. Tighten
    Tighten the mounting bolts to 20 N·m (14 lb ft).

  12. Fill the rear axle with fluid. Refer to Rear Axle Lubricant Level Inspection .
  13. Lower the vehicle.