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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1331 (Rear Drive Axle) >> Repair Instructions >> Differential Overhaul (11.5 Inch Axle) >> Disassemble Procedure

Disassemble Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the differential case side bearings. Refer to Differential Side Bearings Replacement .
  2. Remove the differential ring gear from the differential case. Refer to Differential Drive Pinion Gear Bearing Replacement (8.6, 9.5, 11.5 Inch Axle)  or Differential Drive Pinion Gear Bearing Replacement (10.5 Inch Axle) .
  3. Fig 1: Locating Pinion Shaft End
    GM850793Courtesy of GENERAL MOTORS CORP.
  4. Locate the end of the pinion shaft with the pilot hole.
  5. Fig 2: Illustrating Pinion Shaft Removal
    GM911230Courtesy of GENERAL MOTORS CORP.
  6. Using a brass drift and a hammer, remove the pinion shaft from the differential case.
  7. Fig 3: View Of Pinion Shaft Retaining Ring
    GM911232Courtesy of GENERAL MOTORS CORP.
  8. Remove and discard the retaining ring from the pinion shaft. Replace with NEW only.
  9. Fig 4: View Of Differential Side Gears & Thrust Washers
    GM911236Courtesy of GENERAL MOTORS CORP.
    NOTE: Mark the differential pinion gears top and bottom
  10. Remove the differential pinion gears and the thrust washers by rolling the differential pinion gears out through the differential case opening.
  11. NOTE: Mark the differential side gears left and right.
  12. Remove the differential side gears and the thrust washers.