Since 2013 I've been towing our current Coachmen Freedom Express 192RBS with a 1/2 ton Chevy Avalanche, trailer measures 22' 6" coupler to bumper and typically averages ~ 4600 lbs loaded & ready to camp. I do use a trunnion bar Reese WD system as the Av's rear coil suspension otherwise sags excessively with 600 lbs of gross tongue weight bearing down on the hitch ball but I don't use any friction sway bar as in tens of thousands of miles of towing I've found it unnecessary. With your TV being a 3500 with stiff rear leaf suspension and having a much greater wheelbase than my Av's 130" I'd find it hard to imagine you'd need either WD or sway control towing such a small trailer. :)