DBH_MI wrote:
I have the 2014 version of the truck the OP is considering. Dual cam hitch, 7500 lb trailer. I tow with 6th gear locked out and the truck runs approx. 2300 rpm in 5th at 62 mph with the occasional downshift to 4th on hills and average 10 mpg. When we travel to Colorado, we typically cover 450 to 550 miles per day and spent a day last August pulling in 100 degree heat with a 20 to 30 mph headwind. No problems. No issues being "blown around" by Semis on the expressway or two lanes. No "white knuckle" driving. Keeping the trailer within the towing parameters of the tow vehicle is important regardless the size of the tow vehicle.
See This^
Can't argue with REAL world towing experience with the Chevy 5.3L and your TT of choice. My paper calculations don't compare with the actual results. Computer engine control programming, transmission efficiencies and many other factors make a huge difference over some generic HP curve.
Camp On!