Sierra 3500 4WD V8-6.0L (2008)
19. Remove the pinion.
20. Remove the collapsible spacer.
21. Remove the inner pinion bearing from the pinion using the J 22912-B and a hydraulic press.
22. Remove the outer pinion bearing cup using a hammer and a brass drift in the slots provided.
Move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.