I have a heated seat issue in my 2001 Yukon xl. It'* not the typical "my seats won't heat up". My seats won't turn off. Last winter they would stay on until the battery went dead. Slightly inncoinvienent. My guess is the relay is stuck on or shorted on. I can't find anything anywhere about location of the relay or model numbers ect. I have disconnected the wires under the dash so they can't drain my battery. Any one know where the relay is?

I don't know where the relay is, but I'm sure someone here does. I would suggest as a temporary remedy until you find it that you pull the fuse if you can find that.

There is a module up under the seat. Typically there is a green connector with two pins and a black connector with 4 pins coming off of it.