My wife and I went on a 500 mile cruise with some friends. While on the cruise, I notices a creaking sound coming from the (what sounds to me) front windshield / roof area. Well, it has gotten worse to the point that it is now a constant loud creak while driving. Very annoying. My SLC did not used to do this. I have taken off the front nose and dash, and checked all those areas for anything noticable which could be making that sounds. I did notice the front driver side body bolt (under the nose) was loose, so I put a little blue lock tight on it. I'm hoping i do not need to take the body off to fix this issue. Any advice would be much appreciated.