I have a '06 2500 that I've owned less than six months and am currently putting the third transmission in it. I have a bully dog triple pup (I run in the tow/ economy mode), airaid intake, flowmaster exhausts, and Mickey Thompson 35x13.50R20's. I pull a 38' fifth wheel toy hauler to different oil well locations for work. The tounge weight of my trailer is 16,500 lbs. and the truck has no problem pulling it and each location is no farther than 30 miles from the prevoius one. Thwe dealership replaced the transmission the first time and a coupkle of days later upgraded the TC when it failed. The transmission failed again and I had a transmission shop rebuild it because of time constraints for work. After failing again approx two weeks later, tyhe owner of the tranny shop said the forward clutches were completely toast both times. He said he hasn't run across this and said the dealership might have used a wrong part the first time it was replaced. Any ideas from anyone would be helpful. I'm a novice when it comes to this.