First, I used a 1/2 socket to remove the 10 bolts that hold on the cover. Then pried up the cover with a flathead to reveal the gearing inside.
I ran through a 360 degree turn of the differential to take a look at the gearing.
Also today, I shored up the body buck to get rid of some of the flex. Just short gussets was all it took.
Next: What needs to be done on the 8.8 Rear End