Brand new 2016 Suburban LT, and its happening to me now (less than 11,000 miles and not even a year old yet! You'd think a vehicle that MSRPs for north of 80K wouldn't have these kind of problems! Started vehicle for second time today, and MyLink Screen was not working correctly. Radio failed to show current channels, audio volume froze, and navigation/weather showed "XM subscription expired". My steering wheel controls still operated the radio, just not the LED screen controls. I called XM radio and it turns out its not even their fault. Subscription is still current, it is MyLink that is at play here. I'll try again tomorrow and let everyone know if a "reboot" works.