I have a 2019 GMC Sierra Evelation that I just picked up a month and a half ago. I had the same experience a few nights ago, started my truck to go home from work and the dash was lit up like a xmas tree, brake system failure , abs, traction, had to push down hard on peddle to get it to stop from a crawl. had it towed to dealer, next day they tell me its fine they could not duplicate problem said I needed to come pick it up and they needed the rental back!!! GM knows of this problem and they just dont give a crap! told me to let them know if it happens again!