Working on my 2006 Escalade front 8.25 IFS. Had bearing failure like many of you. I'm very appreciative of the info provided on this forum. I'm still a little foggy on the whole backlash setting thing but I'm sure I will figure it out. I have the differential apart and found one of the adjusting nuts didn't have the lock tab, well, locked down. My Escalade only has 79,000 miles on it. If I understand correctly, install the pinion gear and check the backlash and adjust it with the nuts accordingly. right???