It is not the touch screen, That is always the 1st thing they try and it will not fix it, all it will do is cost you money for no help whatsoever, mine has been doing it also and I have ruled out the touch screen. It has something to do with the actual brain, blue tooth, and the wifi, but do not waste your money on doing the screen. I work on PC's all day every day including touch screens and this is not the problem. Besides I have seen others get told by gm mechanics it is the touch screen so they spend the bucks and it did NOT fix it.