Rear Quarter windows and door locks Inoperative

[NewsCutter]

2002 Montana.
Rear quarter windows inoperative, plus door locks from within vehicle.
Door locks work with the key in exterior lock.
Any ideas on where to start looking. Fuses check ok. My mechanic scratches his head.

 

[Domarrow]

Passenger side, floor, under carpet , there are wires running from the front of the passenger seat to the kicker panel. Almost every single wire that has tape over it you will find completely corroded.
Had the same exact symptoms, and just bought some wire and resoldered the corroded wires back together and voilà. Common problem. You most likely will find water under the carpet, or traces of water. Check for a leak (mine was in the wheel well between 2 steel sheets).

 

[Steelcity]

Thanks for sharing that's some good info.