I have a 93 C1500. I have power windows and locks. One day out of the blue the passenger window would not roll down. I tested to see if it would roll down from either side and would not work. the locks still work though. I thought it was the window motor because it wasn't making any noise when i would try rolling it down. So i went to the junkyard and got a replacement. They tested it before i bought it so i know that can't be it. I installed it and it still does not work. We've also tested to see if there is any power going to the switches and there is. So i'm thinking its the actual switches themselves. has anyone had this problem? or have any advice?