Remover Procedure

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Remove the differential carrier assembly. It is not necessary to drain the differential carrier assembly. Seal the vent tube opening with a piece of tape to prevent the axle lubricant from leaking from the differential carrier assembly Refer to Differential Carrier Assembly Replacement .
If replacing the upper differential carrier assembly bushing, remove the bushing by performing the following steps:
1. Install the J-45850-2 (2), the J-45850-3 (3), the forcing screw, the thrust bearing, the washers, and the nuts (1) over the differential carrier assembly busing as shown.
2. Remove the upper differential carrier assembly bushing by holding the lower nut and tightening the upper nut of the J-45850.
Fig 1: Installing J-45850-2, J-45850-3 & Components Over Differential Carrier Assembly
Courtesy of GENERAL MOTORS CORP.
If replacing the lower differential carrier assembly bushing, remove the bushing by performing the following steps:
1. Install the J-45850-2 (2), the J-45850-3 (1), the forcing screw, the thrust bearing, and the nuts (3) over the differential carrier assembly bushing as shown.
2. Remove the lower differential carrier assembly bushing by holding the upper nut and tightening the lower nut of the J-45850.
  
  Fig 2: Installing J-45850-2, J-45850-3 & Components Over Differential Carrier Assembly Bushing
  Courtesy of GENERAL MOTORS CORP.