Sierra 3500 4WD V8-6.0L (2008)
15. Measure the rotating torque of the pinion. Compare this measurement with the rotating torque recorded during removal.
Tighten the nut in small increments, as needed, until the rotating torque is 0.40-0.57 N.m (3-5 lb in) greater than the rotating torque
recorded during removal.
16. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated. Recheck the rotating torque and adjust if
necessary.
17. Determine the selective shim thickness for the pinion gear bearing retainer. Refer to Pinion Depth Adjustment (10.5 Inch Axle) (See: Service and
Repair/Removal and Replacement/Rear Drive Axle/Pinion Depth Adjustment (10.5 Inch Axle))Pinion Depth Adjustment (8.6, 9.5/9.5LD, and
11.5 Inch Axles) (See: Service and Repair/Removal and Replacement/Rear Drive Axle/Pinion Depth Adjustment (8.6, 9.5/9.5LD, and 11.5 Inch
Axles)) .
18. Apply sealant, GM P/N 1052942 (Canadian P/N 10953466) or equivalent, to sealing surface of the pinion gear bearing retainer.
19. Install the selective shim.
Align the tab on the shim with the unmachined surface of the pinion gear bearing retainer.
20. Apply sealant, GM P/N 1052942 (Canadian P/N 10953466) or equivalent, to surface of the selective shim.
21. Install the pinion gear bearing retainer.
22. Install the pinion gear bearing retainer bolts.
Tighten the pinion gear bearing retainer bolts to 88 N.m (65 lb ft).
23. Measure the rotating torque of the pinion and the ring gear. Compare this measurement with the rotating torque recorded during removal.
The rotating torque of the drive pinion and the differential assembly should be 0.57-1.13 N.m (5-10 lb in) greater than the rotating
torque of the drive pinion measured earlier.
24. If the rotating torque of the pinion and the ring gear is not within specifications, adjust the preload of the pinion or the differential side bearings as
