the average weight of a 24' travel trailer is 4000#. so a 20' is around 3500... point is, use a vehicle appropriate for the application!!!. You could have a tranny cooler the size of a semi radiator, doesn't mean that it'll hold up to another 3500#. these tranny's fail with tow package cooling systems even without a trailer hitch. the trans internals aren't any different with or without tow package. so that's definitely a weak link. engines are not a problem. but the the biggest issue IMHO is the chassis, frame, suspension.
here's what you can do for towing;
Last edited by sapporo; 07-13-2010 at 12:49 AM.