GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Drain the axle lubricant. Refer to Lubricant Change .
  3. Remove the rear axle assembly. Refer to Rear Axle Replacement .
  4. Remove the brake caliper brackets. Refer to Rear Brake Caliper Bracket Replacement in Disc Brakes.
  5. Remove the wheel hubs, 10.50 inch axles only. Refer to Rear Axle Hub, Bearing, Cup, and/or Seal Replacement .
  6. Remove the rear axle cover housing and gasket. Refer to Rear Axle Housing Cover and Gasket Replacement .
  7. Remove the axle shafts. For the 8.6 inch and the 9.5 inch axles, refer to Rear Axle Shaft Replacement . For the 10.5 inch axle, refer to Rear Axle Shaft and/or Gasket Replacement .
  8. Remove the brake backing plates. Refer to Rear Disc Brake Backing Plate Replacement .
  9. Remove the differential assembly. Refer to Drive Pinion and Ring Gear Replacement .
  10. Remove the drive pinion shaft yoke and the seal. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement .
  11. Remove the drive pinion. Refer to Drive Pinion and Ring Gear Replacement .

Installation Procedure

  1. Install the drive pinion. Refer to Drive Pinion and Ring Gear Replacement .
  2. Install the differential assembly. Refer to Drive Pinion and Ring Gear Replacement .
  3. Adjust the differential side bearing preload. Refer to Differential Carrier Bearing Preload Adjustment .
  4. Adjust the backlash. Refer to Backlash Adjustment .
  5. Perform a gear tooth contact pattern check. Refer to Gear Tooth Contact Pattern Inspection .
  6. Install the brake backing plates. Refer to Rear Disc Brake Backing Plate Replacement .
  7. Install the axle shafts. For the 8.6 inch and the 9.5 inch axle, refer to Rear Axle Shaft Replacement . For the 10.5 inch axle, refer to Rear Axle Shaft and/or Gasket Replacement .
  8. Install the rear axle housing cover and gasket. Refer to Rear Axle Housing Cover and Gasket Replacement .
  9. Install the brake caliper brackets. Refer to Rear Brake Caliper Bracket Replacement in Disc Brakes.
  10. Install the wheel hub, 10.5 inch axle only. Refer to Rear Axle Hub, Bearing, Cup, and/or Seal Replacement .
  11. Install the rear axle. Refer to Rear Axle Replacement .
  12. Fill the axle with lubricant. Refer to Lubricant Change .
  13. Lower the vehicle.