05 CC rear passenger window stuck down. Will not power back up, all three other window switches work and all 4 power locks work. Window lock is not on and neither the main driver switch or door switch will operate window motor. I tried to manually push/pull the window up and NO way it would move. Finally out of the blue the switch worked (a day later). Any ideas or problem modules I should look into?

Sounds like a window motor.. I'm sure the BCM comes into play. But I've seen many motors behave the same way. Take it in. Doesn't sound like a big deal.

Had the exact same thing two weeks ago. Passenger side rear. Wouldn't go down. Walked back to back switch still nothing. Slapped the side of the driver door panel, and it started working. It has been fine ever since.:eek:
Possibly loose connection on drivers switch?

I had that happen on my '04, it was a bad ground on the BCM.

what is the BCM?

BCM is the "body control module". I have had the same problem with my rear passenger window. I jiggled the wires going into the door and then it started to work again. I believe that this may come back to haunt me again but the main thing is that it is working. There seems to be a common thread about this sort of thing happening, so maybe it will be nailed down as a specific defect of the GM manufacturing process.

Is the BCM the main panel on the drivers door?

I think the BCM is a black box somewhere in the dash area, but I also have had window problems and my fathers 2000 had a window die last week. It's called a window "regulator" and will run you 250 or so installed if you are out of warranty.