The frist time my came off I put a deposit on the tools from the Dodge dealer and fixed it myself. It was a weekend and I had a load going to Atlanta monday. That was at 52000. The second time it happened was at 104000 and I was north of Williams Lake, B. C. . The Dodge dealed fixed it there and he put the new nut on. So far so good and I now have 141650 miles. I figure it should go another 15000 before it happens again. It cost $228 US dollars to get it fixed in Canada . That was in 2002. I'd bet the dealer here would charge twice that.