GM Service Manual Online
For 1990-2009 cars only

Rear Axle Lubricant Replacement 10.5 Inch Axle

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.

  2. Object Number: 2148605  Size: SH
  3. Remove the fill plug (1).

  4. Object Number: 2148679  Size: SH
  5. Remove the rear axle drain plug (1).
  6. Drain the lubricant into a suitable container.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2148679  Size: SH
  1. Install the rear axle drain plug and tighten to 33 N·m (24 lb ft).
  2. Fill the rear axle with the proper fluid. Refer to Approximate Fluid Capacities and Fluid and Lubricant Recommendations.

  3. Object Number: 2148605  Size: SH
  4. Install the fill plug and tighten to 33 N·m (24 lb ft).
  5. Remove the support and lower the vehicle.

Rear Axle Lubricant Replacement 8.6 Inch Axle

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Clean the area around the rear axle fill plug.
  3. Remove the rear axle fill plug.
  4. Remove the rear axle cover. Refer to Rear Axle Housing Cover and Gasket Replacement.
  5. Drain the lubricant into a suitable container.

Installation Procedure

  1. Install the rear axle cover. Refer to Rear Axle Housing Cover and Gasket Replacement.
  2. Fill the rear axle with axle lubricant. Use the proper fluid. Refer to Approximate Fluid Capacities and Adhesives, Fluids, Lubricants, and Sealers.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 392774  Size: SH
  4. Install the rear axle fill plug and tighten to 33 N·m (24 lb ft).
  5. Lower the vehicle.

Rear Axle Lubricant Replacement 9.5LD Inch Axle

Removal Procedure


    Object Number: 1689710  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the drain plug.

  3. Object Number: 1689720  Size: SH
  4. Remove the fill plug.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1689710  Size: SH
  1. Install the drain plug and tighten to 33 N·m (24 lb ft).
  2. Fill the rear drive axle.
  3. • Use the proper fluid, refer to Approximate Fluid Capacities.
    • For the proper capacity, refer to Fluid and Lubricant Recommendations.

    Object Number: 1689720  Size: SH
  4. Install the fill plug and tighten to 33 N·m (24 lb ft).
  5. Remove the support and lower the vehicle.