I finally was able to get out to the garage to get my 2019+ brakes mounted up. Also did 4 of the 6 stainless Goodridge lines(have stabilitrak). I decided not to mess with the upper 2 lines after a quick look, and after reading that it's a pain to do them.
Went to start bleeding on the right rear and the bleeder screw snapped in two. A quick run to the parts store for a caliper and got that swapped out. Also flushed the fluid.
My 17" 2020+ Silverado wheels fit great, except Discount Tire double stacked weights on one wheel, which happened to be a front wheel. Swapped that front wheel with a rear and everything is good. It stops much better than it did with the stock brakes!