Hey Andy ...Dave again, I just found a 2005 1/2 ton 5.3 Chevy but does NOT have a towing package. I called the place in our area that does towing only and they said that normally the trucks come with a larger radiator and transmission cooler anyway and by adding the hitch and wiring ( 7 pin ) I would be up to snuff for pulling my trailer. Its a 26 foot wilderness 1998 model. Is this true? Thanks again.. dave Gale