Hello,
I have a 2004 Hummer H2 6.0L V8 and its driver's seat is Not working I have changed the expensive fuses in the footwell both left and right the passenger seat works however no heating for either of them! neither can I move the driver's seat and honestly it would be nice to find a resolution here rather than going to the Dealer.

 

Its probably the control module/switch assembly in the door that is bad. Many of them were damaged from moisture. I had to replace the one in my 06 because of that. Push the button and nothing happens or the indicator comes on and that's about it.