So my Pops 2012 Chevy Tahoe has been making some rear end noise and he narrowed down to something in the main housing.... after going back and forth with his mechanic, we decided to do it ourselves. Both of us have never rebuilt a rear end and were willing to learn..... today we got everything apart and realized the main pinion bearing was pretty jacked up... we got the new bearing pressed on and Pinion installed. It was a slow process for us, as the preload was reading too high... but finally realized the pinion seal wasn’t set in enough and causing some resistance against the yoke. All is good now and ready to move forward tomorrow. It was a Fun day working with my Dad and learning some new shit together... Lots of cursing and laughing... and building the confidence to do my own gear change on the Jeep.