Radio starts stuttering and then eventually freezes and locks up displaying the GMC logo. It doesn't respond to buttons or even the power. Restarting the car doesn't fix the issue, it'll still be frozen. The best part? When the radio finally does unfreeze by itself whatever you were listening to is now maximum volume to blow your ears out despite that not being the case before the radio froze. Manually checked for radio software updates, no such luck.