I have a 2013 Chevy Silverado. It has a built in factory USB port. I've had an iPhone 5 for the past 2 years. I have played music and charged it through a lightning cord using said USB port with no trouble. This past week I upgraded to an iPhone 6 plus. When I plug it in to the port, the phone goes to the all black screen with the white apple on it for about 10 seconds and the phone vibrates twice, then the home screen comes back for a few seconds and then goes back to the black screen w/ white apple. It keeps doing this over and over. A few times I've actually been able to get to the music app to select a song but it goes haywire, it starts rifling through the playlist at like 100 songs per second and the screen flickers. A few times I've even had to do a reboot. I've tried 3 different lightning cords including the one that came with the iPhone 6. I am updated to the newest IOS. I cannot figure out what is causing this. Has anybody else had this trouble on newer GM vehicles? Were you able to fix it? If so, for the love of god, tell me how.