Is this a problem or not - I am planning on purchasing an enclosed trailer this year. I had a trailer hitch installed but a friend mentioned that since the truck didnt com with a tow package ( something about tow package having a external trans oil cooler ) it could ruin the trans. I have a 2001 chevy silverado 1500. Will my truck be ok as is ? Also I have been checking trailers and there are so many brands ( Pace, Haulmark, Featherlite, American Hauler, Thule to name a few ) are there any to stay clear of ?