Ever since the dealer was nice enough to run the car through their car wash after getting work done. We've been dealing with the wipers jumping across the window. It don't matter how wet the window is. The wipers on now i just put on 2 weeks ago and that didn't help at all. I've tried cleaning the window with dish soap, Someone recommended degreaser, neither one worked tryed the clay bar. That got dirt off but they still skip. Here is a video. You can hear it. http://www.youtube.com/watch?v=Z1w_ytq3Vco I don't know what else to try. Other then go back to Lawrence Chevy and complain to them.