WFC_JR

It seems GM pushed out an update that has fixed this problem.

Same thing happen to me starting a few weeks ago in my sierra (53000 miles). Dealer says it is caused by an update pushed out over the air by GM. They refuse to replace any parts or even look at it until they get more info from GM headquarters. There were 3 others in service this morning for same issue at the dealer. All GMC but not all trucks. I've been loyal to GMC for years but not anymore. I've had engine problems and now this. I'm tired of bad service and poor quality control.

I have a 2015 Sierra. Over the last few weeks the display has been turning off and on, changing stations, alternating weather temps between F or C and displaying an initialization screen every few minutes. I made an appt with GMC dealer this morning and was told they just received notice that it's a known problem impacting many models. I was there at 0700 this morning and there were 3 other GM vehicles there with same problem. The service advisor said GM thinks an over the air update caused it and they've been told not to replace any parts related to this problem while GM is trying to find a solution. They don't have one yet. Really frustrating. I just wanted to put this out on this forum because I've seen a lot of posts in different places with same issue.