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Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the lower differential carrier assembly bushing by performing the following steps:
    1. 1.1. Install the J 21474-18 (1), the thrust bearing (2), the J 36616-2 (3), the J 36616-1 (4), and the forcing screw (5) as shown.
    2. 1.2. While holding the forcing screw, slowly tighten the J 21474-18 until the bushing has stopped against the step on the bushing and is centered within the differential carrier assembly bushing bore.
    Fig 1: Install Lower Differential Carrier Assembly Bushing Using J 36616-2, J 33791-1 & J 21474-18
    G01480432Courtesy of GENERAL MOTORS CORP.
  2. Install the upper differential carrier assembly bushing by performing the following steps:
    1. 2.1. Install the J 21474-18 (1), the thrust bearing (2), the J 36616-2 (3), the J 36616-1 (4), and the forcing screw (5) as shown.
    2. 2.2. While the forcing screw, slowly tighten the J 21474-18 until the bushing has stopped against the step on the bushing and is centered within the differential carrier assembly bushing bore.
  3. Install the differential carrier assembly. Refer to Differential Carrier Assembly Replacement .
    Fig 2: Install Upper Differential Carrier Assembly Bushing Using J 36616-2, J 33791-1 & J 21474-18
    G01480433Courtesy of GENERAL MOTORS CORP.
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