In the end no help from the dealer. Glass guy said it looked like something burned but the wiring looked fine. It cost me about $1200 ($900 for the window and $300 to my Chevy dealer for "diagnosis labor"). Showed them this and other posts but they didn't seem to care and said they've never seen this. I've bought 3 new Chevy trucks over the years from them. Pretty sure this is the last one. I did file the NHST complaint, not sure it will help.
Also the dealer left my backseat out to "make things easier for the glass installer" however the glass installer did not need it out so got stuck putting it back in myself. Not a fun by yourself lol.