I have always owned large fifth wheels pulling with 3/4 ton diesel. Will now be going to a TT. I own a 2017 4X4 1500 Crew Cab Silverado with a 5.3 gas with 3.42 rear end and 6 speed trans. The max tow...
We tow a 34' 6400lbs dry, 7800lbs loaded trailer. I wouldn't do it with anything less than a 3/4 ton truck. You'll be much happier (towing) the smaller lighter one with your 1/2 ton.