Contact customer service the maker of the frame, IE - Freightliner, and give the last 6 digs of the vin.
Side note...I had this done on our 08 TM, but this was over a year ago when the recall came out. Pondering this is just hitting as a recall via Good Sams. Unless it is something differnt, which I will check, but do not think it is as it sounds like what I recall. (no pun intended.