Hey guys, not my first Hummer, but I just got this one and am having an odd issue…

Power Seats are not working, no heat, no movement
Drivers window is perfect BUT no other windows work, but I can hear them click when I go up or down.
Sunroof won’t open or close, but I can hear the motor trying.
all of the 4x4 buttons don’t work, no lights no errors, just says service 4wd.
some of the door locks are also inoperable, but the drivers lock will control them all

I’ve checked all of the fuses and they are all good.
I was thinking maybe BCM but it’s weird to me that so many other items aren’t working either..

anyone deal with this level of failure?

 

probably water got in from the door seals and roof lights. clean up your switches

 

That’s exactly what I was thinking. So what I’ve done so far is I swapped both rear window switches, and now the driver side rear does it go up and down! Partial success!

oddly enough the passenger rear was non functional and is still non functional, so we can rule out that the rear pass window switch was an issue.

both passenger sides are still inop, will not go up or down with their dedicated switch or with the master..