I am sure this has been asked before but I couldn't find anything in the search. I have a rattle that sounds like it is coming from the left rear. I think it is the left resonator. Not sure if it is coming from the inside of the resonator or if it is bumping on the frame. Anyone else have this problem? Keep in mind it is a Police car so aftermarket exhaust is out of the question. Not that I wouldn't want it! Car is fun to patrol in but the rattles are driving me nucking futts!