After 15 months of ownership my 2019 GMC Denali 3500 started giving 3 chirps every time any of the four doors was closed. In Setting/Vehicle there is nothing in the menu to catch this. The Gm tech who called didn’t have an idea at this point. I should add that the keys are outside the truck with me. And, it chirps when I close the door when I’m inside with the key in the ignition and the truck running.