ok very strange thing happening in my truck..... Doesn't happen always worst when driving into wind or hitting me on the side, however truck whistles or "hums" loudly above 65 or so. Sounds like its from windshield or wipers somewhere around there but can't pinpoint it and afraid of stealership....Wondering if it is the plastic below the windshield not sure what it would be called or even if thats issue..Any ideas?????