Notice: Refer to Fastener Notice in the Preface section.
- Position the differential support to the differential carrier, then install the 2 bolts (5) and 2 nuts (1).
Tighten
Tighten the bolts to 103 N·m (76 lb ft).
- Position the rear differential support (3) on the differential carrier, then install the 3 bolts.
Tighten
Tighten the bolts to 167 N·m (123 lb ft).
- Carefully raise the differential assembly with differential support into the vehicle.
- Install the 2 differential support to rear suspension crossmember bolts (6).
Tighten
Tighten the bolts to 118 N·m (87 lb ft).
- Install the 2 rear differential support retaining bolts (2).
Tighten
Tighten the bolts to 137 N·m (101 lb ft).
- Install the left and right rear wheel drive shafts from the vehicle. Refer to
Rear Wheel Drive Shaft Replacement
in Wheel Drive Shafts.
- Install the left and right rear knuckles from the vehicle. Refer to
Knuckle Replacement
in Rear Suspension.
- Install the propeller shaft from the vehicle. Refer to
Two-Piece Propeller Shaft Replacement
In Propeller Shaft.
- Install the catalytic converter. Refer to
Catalytic Converter Replacement
in Engine Exhaust.
- Install the rear tire and wheel assemblies. Refer to
Tire and Wheel Removal and Installation
in Tires and Wheels.
- Install the drain plug with a new gasket into the differential carrier.
Tighten
Tighten the differential carrier drain plug to 39 N·m (29 lb ft).
- Refill the differential carrier with approximately 0.5 liters (1.05 pts) of 80W-90 GL5 lubricant GM P/N 12345977 (Canadian P/N 10953482), or equivalent. The oil level should be even with the bottom of the
differential carrier oil level/filler plug hole.
- Install the oil level/filler plug with a new gasket into the differential carrier.
Tighten
Tighten the differential oil level/filler plug to 39 N·m (29 lb ft).
- Remove the drain pan from under the rear axle housing.
- Lower the vehicle.