Good afternoon everyone! 2003 Yukon XL 5.3 4X4. There has been a pull on the battery for a few weeks now and I've been disconnecting the battery everytime I stop. Today the whole radio unit was black when I got in the car. I do not use the car daily. This has only been disconnected maybe 5 times. I googled maybe the radio being an issue and found nothing. The heated seats have shorted out as well over the past few months. They won't stay on even 10 seconds. I thought I'd wait to replace when I replace seat bottoms. Between the radio and the heating elements, could they be causing this battery drain?