The main touch screen in the center went completely black. Apple Car Play was still working, but pressing the home button on the dash would exit to a completely black screen. I then tried calling OnStar which offered no advice on how to reset the system. After turning off the vehicle and letting it sit for a few minutes the system then returned to normal. Very strange. I will try to take pictures and video of the problem happens again. Has anyone else found a way to hard reset the infotainment system?