Sierra 1500 2WD V6-4.3L (2008)
1. Install a new pinion oil seal using the J 22388 (8.6 inch, 9.5 inch axles) or the J 44414 (10.5 inch, 11.5 inch axle).
2. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the splines of the pinion yoke.
3. Install the pinion yoke.
Align the marks made during removal.
Notice: Refer to Pinion Flange/Yoke Installation Notice .
4. Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few pinion shaft threads show through the yoke.
5. Install the washer and a new pinion nut.
6. Install the J 8614-01 onto the pinion yoke as shown.
Notice: Refer to Fastener Notice .
Important: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
7. Tighten the pinion nut while holding the J 8614-01 .
Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.
8. 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.
9. 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.
