Special Tools

1. Clean all parts in a suitable solution before assembling.

Note: 

•	Refer to Shimming Procedures before assembling the differential case.

•	Lubricate the bearing inner and outer race surface before assembly.

2. Install the following parts into the differential case (7):

•	The pinion gears (3)

•	The pinion gear thrust washers (2)

•	The side gears (5)

•	The side gear thrust washers (4)

•	The pinion shaft (6)

•	NEW snap rings (1)





Note: Apply even pressure to the vehicle speed sensor (VSS) ring during installation.

3. Install the vehicle speed sensor (VSS) ring onto the differential case.



4. Apply GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the differential ring gear bolts unless pre-coated.

Note: The machined surface on the differential ring gear faces the differential case.

5. Install the differential ring gear onto the differential case.

Caution: Refer to Fastener Caution in the Preface section.

6. Install the ten NEW differential ring gear bolts and tighten to 95 N·m (68 lb ft).




Note: Refer to Shimming Procedures before installing the left differential side bearing.

7. Install a NEW left differential side bearing and shim onto the differential case using the J 44386 bearing installer and the J 7079-2 driver handle .




Note: Refer to Shimming Procedures before installing the right differential side bearing.

8. Install a NEW right differential side bearing and shim onto the differential case using the J 44386 bearing installer  (2) and the J 7079-2 driver handle  (1).