BIL used to own one. His truck was a 2010 though 4x4 with 5.4 and 3:73 gears I believe. He pulled a 7-8 k travel trailer. He didn’t complain about it as far as I know. It was a good truck, drank some gas but so does any gas towing rig like my 09 6.0 GM. I think they had some issues with the 3 valve heads and cam phasers. Though he did not, but he only had the combo for a few years and sold it, just because he went down to a mid sized truck and was not towing at that point.