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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1585 (Rear Drive Axle) >> Repair Instructions >> Differential Overhaul (11.5 Inch Axle) >> Assemble Procedure

Assemble Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Pinion Shaft Retaining Ring
    GM911232Courtesy of GENERAL MOTORS CORP.
    NOTE: Ensure that the retaining ring is properly seated groove.
  1. Install the NEW retaining ring on the differential pinion shaft.
  2. Using the proper axle lubricant, lubricate the pinion and side gears. Refer to Fluid and Lubricant Recommendations (USA and Canada) .
    3. NOTE: If the same differential side gears and the thrust washers are being used, install the gears and the thrust washers to their original locations.
  3. Install the differential side gear thrust washers to the differential side gears.
  4. Install the differential side gears and thrust washers in the differential case.
    5. Fig 2: View Of Differential Side Gears & Thrust Washers
    GM911236Courtesy of GENERAL MOTORS CORP.
    NOTE: If the same differential side gears and the thrust washers are being used, install the gears and the thrust washers to their original locations.
  5. Install the thrust washers to the pinion gears.
  6. Position one of the pinion gears with the thrust washer between the differential side gears.
  7. Install the second pinion gear with the thrust washer between the differential side gears directly opposite of the first gear.
  8. Rotate the differential side gears until the pinion gears and the thrust washers are directly opposite the opening in the differential case.
    9. Fig 3: Installing Pinion Shaft
    GM911245Courtesy of GENERAL MOTORS CORP.
    NOTE: When installing the differential pinion shaft, slide differential pinion until the retaining ring is against the differential case.
  9. Using a brass drift and a hammer, install the differential pinion shaft.
  10. Install the differential ring gear on 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) .
  11. Install the differential side bearings. Refer to Differential Bearing Replacement .
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