From my understanding, there was no problem with the steel used in the frame. The problem was that the supplier who made the frames did not do the metal rust treatment to spec and it was not identified until frames starting rusting out years after production. My truck has had the frame and spring recalls done but I have no complaints after 8 yrs/160K miles with nothing but routine maintenance. I was glad for the new springs as I had overloaded the old ones a few times and they were showing their age.
