I'm having the same problem with my '03 Escalade. The two rear seat heaters work fine but the front seats don't. It did this last year but as spontaneously as it stopped working it started working again. And now here we are entering cold weather again and they don't work again. Even my controls for the driver seat stopped working
gonna take it in Thurs. Nov. 20th for oil change, etc and see if they can tell me what's up with seat heaters and driver seat controls.