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.

 

Does that affect the movement of the seat too? because my seat doesn't move or heat and the psg seats do not heat

 

@mtlhummer

There are a number of threads on this topic, for example this one shows part of the memory seat module circuit (MSM)
https://www.hummerforums.com/forum/h...er-seat-47193/

The module also controls the front right seat heaters, this suggests the problem lies here. again this thread explores the under seat connector as posted by @finall

https://www.hummerforums.com/forum/h...ng-help-45496/

It might be worth checking the connectors under the seat.

Any diagnostic trouble codes would also be helpful.