You need a HD truck or stick with a 5000-5500 ish dry TT (that will be 6500-7500 ish loaded). Your truck is capable of pulling a good size camper.... But it's not going to do the job of an HD truck. Size the trailer to the trucks capability and you will be more than fine.
This is not an issue of HD vs Half ton. This is an issue of appropriately sizing the RV for the Truck.
We see the same thing with 2500 series owners who want to pull a triple axle 20k toy hauler and can't understand what the problem is. After all they have a HD truck. Remember, it's not about how much the trailer weighs. It's about how much of that weight is put on the truck. For a fiver it's 20-25% of the trailer weight, for a TT it's 10-15%.
Thanks and good luck!
Jeremiah
