Rear Axle Housing Cover and Gasket Replacement
Rear Axle Housing Cover and Gasket ReplacementRemoval Procedure
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Support the differential with a transmission jack (1).
3. Disconnect the ABS sensor electrical connectors (2).
4. Remove the differential support bracket bolts (1) from the differential support bracket (2).
5. Remove the rear differential bushing bolts (1).
Important: The differential may be lowered 100-125 mm (4-5 inch) without the removal of the drive axles or the propeller shaft from the differential. This provides sufficient clearance to remove the rear axle housing cover.
6. Lower the differential slightly.
7. Place a drain pan under the differential.
8. Remove the rear axle housing cover bolts (1).
9. Remove the rear axle housing cover from the differential.
10. Clean the sealing surfaces on the differential.
11. Clean the sealing surfaces on the rear axle housing cover.
12. Remove the ABS sensor bolts from the cover.
13. Remove the ABS sensors from the cover.
Installation Procedure
1. Install the ABS sensors to the cover.
Notice: Refer to Fastener Notice in Service Precautions.
2. Install the ABS sensor bolts to the cover.
^ Tighten the ABS sensor bolts to 7 Nm (62 inch lbs.).
3. Coat the differential sealing surfaces uniformly with sealant, GM P/N 12346141 or equivalent.
4. Install the rear axle housing cover to the differential.
5. Install the rear axle housing cover bolts (1).
^ Tighten the rear axle housing cover bolts (1) to 60 Nm (44 ft. lbs.).
6. Raise the differential into place.
7. Install the differential support bracket bolts (1).
^ Tighten the differential support bracket bolts to 90 Nm (66 ft. lbs.) + 38 degrees.
8. Install the rear differential bushing bolts (1).
^ Tighten the rear differential bushing bolts (1) to 100 Nm (74 ft. lbs.).
9. Connect the ABS sensor connectors (2).
10. Remove the transmission jack (1).
11. Refill the differential with proper lubricant.
12. Lower the vehicle.
13. Inspect the vehicle for leaks.