Originally Posted by rancherwillie
Thanks for your input. Were you in the mountains when experiencing the half ton weakness?
No, just around the DFW area, fairly flat terrain. The 1500 5.3L would pull it, just didn't leave any room for margin. Now, we did have 3.42 gears, 3.73 would have been better. The rear springs were also an issue, I added helper springs from SuperSpring and that helped to some degree. And yes, I had the WD hitch set up properly and adjusted as much as possible. We wanted the ability to go anywhere with the trailer, so we opted to move up to the 2500HD Duramax - we went from 9500# conventional towing capability to 13,000# and plenty of power in case we need it.