I have not had any specific feedback on that vehicle, but having a muffler rattle against a hitch is a fairly common occurrence that is easily repairable.
Because an exhaust system is meant to move on its hangers, it does not sit in a fixed position, and this position can vary a bit from vehicle to vehicle. If you look at the FAQ article I have linked you to, you can see some different strategies like slightly bending the exhaust hangers to provide more clearance between the hitch and muffler. view full answer...