The rust problem may be related to the chroming process for the bumpers. In other manufacturing industries, they are using a different chromium ion that is more environmentally friendly but does not bond as well as the previously used one, and we may be beginning to see it impact the auto industry. Officially, Chrysler has not issued a recall for this, but rather a recall for the replacement bumpers so keep your eye on the replacements. Chryslers official response so far to the service departments is that customers should try buffing it off, but it will return. it did on my demo and we ended up replacing the bumper before we sold the truck.