I am looking at buying an '08 V6 that does not have the factory hitch installed. Is my best bet to have the dear install or go to third party like uhaul? Does the tranny / computer need to be reporgrammed? What else is comes with the factory tow package that I might be missing if buy an Equinox that does not have the tow package? I am looking at V6 and will be towing a utility trailer with some bikes and tents etc for camping. I don't think it goes much over 1500 lbs. But I want this done right. Sould I hold out for an Equinox that already has the tow package? I am looking 2 or 3 years used.