Have a 2015 Sierra 1500 Denali but when the radio boots up it doesn’t say Denali it just say gmc and it has the projection app. If I don’t have phone plugged in and click it it recognizes no phone,but if I plug my iPhone in and click the projection app it just beeps. It won’t open to anything just beeps when clicked. So I’m thinking the previous owner put a newer radio in giving the option for car play. I can go in settings and car play and android auto settings are there, so why does it just beep and not enter car play?
