The radio plays for 2 minutes. The screen goes blank, it comes back, changes stations by itself, goes blank again, with no control over knobs or screen, and then goes off... If you start truck all over again, it does the same. I removed battery connections 3 times and left off for more than 20m minutes each time, but the same issue happens.

Some say HMI needs to be unplugged and reconnected, for that same issue... I'm taking to dealer Monday to see what's up... looks like a big issue for a lot of GM vehicles.