2005 CHEVROLET AVEO User Comment / Complaint

I have taken my car in several times to see why there is such a bad shaking when i reach speeds in excess of 55 mph and there seems to be no reason after balancing my tires, on top of having all replaced and allining the tires there is a horrible shaking of the steering wheel and a very loud noise like a roaring oise in the back of my car. also i have a huge crack in the windshiled that i thought came from a pepple or something hitting the windshield however there is not a dent so to speak or any marks that would indicate a rock hit it, the crack starts uder teh rubber lining and goes all the way down the windshield from one end to the other. fb