I own a 2005 Chevy Impala. We had an ice storm recently and that made my wipers get stuck frozen. I loosened a lot of ice from the wipers and thought I could operate them but they were still stuck. After the ice melted the wipers don't work in intermittent mode or slow mode, but they do work in fast mode. The moment I turn the dial back down from fast mode the wipers stop at the location where they were (they don't move back into their docked position). I don't think the problem is stripped wiper arms since they still do function. I also don't think the problem is with the motor itself for that same reason. Can anyone help? Thank you!!