2016 GMC Yukon infotainment screen blackout

why does the infotainment screen black out

Have no idea, but you should still be under warranty so have it looked at . You should have 36000 miles and 3 years which ever comes first.

My Mother in law’s 2013 or 2014 Equinox had this happen a few times on a trip. The dealer ended up replacing the screen under warranty.