swe4969

Ok so i am hoping that someone on here can help me. I purchased a 2015 suburban LTZ in march and for the first 3 weeks Carplay would pop up on my phone when plugged in with the usb cable and and i would get the little blue bar across the top of my phone and the stuff would show up on the display. Something popped up on my phone while i was on a call and Carplay disappeared. My phone and the usb cable when plugged into other chevy cars, carplay works just fine. I have taken it back to the dealership and they said my car never had carplay and previous owner upgraded it. the manufacture date of my suburban is Feb 19 2015 I have pulled out the HMI unit and i have 2.0 hmi. Just looking for help as to how the hell to get it back.