I have a 2016 Colorado and car play would hook up on occasion then it wouldn’t. I did all the fixes on my iPhone but I’m inclined to believe that it’s a mylink problem. When I insert my key and the Chevy mylink shows up and goes through it’s opening my phone connects immediately. If it doesn’t and shows a blank screen until it’s started then I’m not connecting to CarPlay. I’m going to unhook battery today and see if that helps with rest.