I have a Chevy Cavalier Sedan LS with power windows. Lately the drivers side window and the rear passenger side windows will go down but then won't go back up. If I wait half hour they will go back up 2-6 inches but then I have to give it another half hour before they will go up another couple inches and so on until I get them completely up. It's real annoying and I'm not sure if they are going to stop working so I've stopped using them. Anyone have any ideas. I don't think its the window motors, they sound fine when they are actually working.