Sierra Classic 2500 4WD V8-6.0L (2007)
2. Install the upper differential carrier assembly bushing by performing the following steps:
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. 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.
3. Install the differential carrier assembly. Refer to Differential Carrier Assembly Replacement.
