I have a 15 ATS performance model with 16000 miles certified car and the very next day after purchase the screen quit working. The dealership replaced the screen but it still flickers so after 4 more times to the dealership they replaced the alternator saying that was the cause, not. It still flickers constantly. Does anyone know what else I can do. I’ve even contacted gm but their answer was (I will get a senior advisor to contact you) I am demanding a new car and now my headlights are acting crazy one will be higher than the other this to thousand and 15 Cadillac has 16,000 miles and is having all these problems what do I got to look forward to? I mean this is the worst vehicle and the most I’ve ever paid for one.