GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

  2. Object Number: 913433  Size: SH
  3. Remove the rear axle fill plug.

  4. Object Number: 390113  Size: SH
  5. Remove the rear axle drain plug.
  6. Drain the lubricant into a suitable container.
  7. Inspect the drain plug for excessive metal particle accumulation. This accumulation is symptomatic of extreme wear.
  8. Clean the drain plug.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 390113  Size: SH
  1. Install the rear axle drain plug and tighten to 33 N·m (24 lb ft).
  2. Fill the rear axle. Use the proper fluid. Refer to Approximate Fluid Capacities and Fluid and Lubricant Recommendations.

  3. Object Number: 913433  Size: SH
  4. Install the rear axle fill plug and tighten to 33 N·m (24 lb ft).
  5. Lower the vehicle.