I couple weeks ago I noticed a bit of a rattle coming from the rear deck in my 06 GTP. At first I thought one of my speakers was blown but the rattle got continually worse and now it's become unbearable to listen to music. Every time the slightest bit of bass hits, it rattles. I think that it's the brake light inside that's rattling but I can't seem to pinpoint it. Has anyone else had this problem? If so, do you have a solution?