2002 Cadillac Escalade

Question

heated seat will not shut off. Runs down battery. Unplugged it but now seat is no longer adjustable as the same electrical connection runs that system. Dealership said due to Autostart. Autostart taken completely out and it still did it. Had another electrical guy replace the actual seat heater and it worked for awhile. Today (at -11 degrees) when I got into the car it turned over slowly and the seat was warm. I had not even turned the seat on. Any ideas?