mikestirparo

So I know im not in the exact right spot here cause the vehicle in question is 2016 Escalade but I figured it was GM lol. I’ve got so many codes and I can’t find anything as the culprit. U-0121 U-0126 U-051 U-0100 U-0139 U- 0101 U 0422 U-0415 and a few more. The only things that don’t work in the truck are the cruise control and the air compressor for the air ride and the fuse is good and new compressor. I’m losing my mind and don’t have a ton of money to drop it at a dealer for awhile. Any help or direction would be greatly appreciated.