The other day i noticed that something was rattling in my car. I could not figure out where it was coming from. Then i noticed when i went over a hard bump it sounded like something was getting ready to shatter so i pulled the sunroof door or whatever you want to call it back. After doing this i noticed the rattling was coming from the sunroof. I pushed up on the sunroof a bit and noticed that it was moving quite a bit. I have a 2006 cobalt ss/sc with 700 miles on it. Has anybody had this sort of problem out of theirs? I'm taking it to the dealership friday.