Sierra Classic 2500 4WD V8-8.1L (2007)
1. Install a new pinion oil seal using the J 22388.
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.
4. Notice:
Refer to Pinion Flange/Yoke Installation Notice.
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.
7. Notice:
Refer to Fastener Notice.
