This occured after heavy snow fall and freezing rain. The wiper blade was frozen to the windshield and when I started my truck the windshield wipers had not been completely turned off when I had shut it down the day before and the wiper attempted to move. So I think something striped. But not sure if I need to replace the whole motor or if I can replace the wiper arm! Plus how do I replace and access these parts? Thanks for your help!