I blew out 2nd gear around 50k miles while towing the camper and it almost ruined a great vacation. Luckily I was able to limp it back home (2 hours and mostly highway) and my trailer was light enough that I could get a 1st to 3rd shift to get going. Dodge "rebuilt" it but only replaced what was broken. This year I got a much heavier camper and had a much longer tow planned. I was not having any transmission issues but was worried about losing something and ruining my only week of vacationthis year. I went to a local shop and had a full rebuild. After it was apart, he showed me some my parts that were almost to the point of failure. He figured I had about 10,000 more miles before I had trouble. Best 3500 bucks I have spent. It had performed flawlessly and pulls my 18k camper very well. Prior to the rebuild, the truck was bone stock, and driven very conservatively with occasional light towing. I do believe my failure is not the norm for the 48re but nonetheless it happened to me.