It is all about the payload numbers. Forget about any ‘towing capacity’ numbers on trucks, as they really dont matter in the rv world. The payload will be exceeded long before towing capacity with a normal travel trailer setup. Same goes for published tongue weights on the trailer. They are weighed completely empty from the factory (as in, not even batteries or propane tanks, to say nothing of water or your own stuff). For safe/stable towing, you need between 10 and 15% of total weight on the tongue (otherwise you will run into serious sway and control issues, particularly if you come in too light). Take the trailers GVWR number from its sticker to assume maximum expected weight, use 12.5% as a sweet spot, and compare that number against the trucks payload sticker (remembering to also subtract out the actual weight of the family, the dog, and whatever else you throw in the truck). There are many other factors to get off in the weeds on (weight distributing hitches, air bags, and on and on) but this will get you to know if your truck is in the right ball park for a given model of trailer, or what you need to be looking for.