I have a 2004 dodge CTD with 3.73 rear end when i tow my 5ver in tow haul mode my rpm,s are runnibf 2500 rpm at 60 62 mph, sound about right? truck is a 4speed auto
We have a 2012 GMC 2500HD D/A Crewcab and when towing our FW at around 65 we are pushing 1,600 rpms. We do have the six-speed auto but I find no difference whether we use the "tow/haul" button or not while cruising down the road. Usually we are also towing a 19' boat behind the FW as well.