Hi Folks - I am new here but could use some help. I just bought a used 2012 Silverado 2500HD 6.0 liter / 6 speed auto tranny with 3.73 gears. I've been a camper for years and towed many RV's. Last truck was a Ford dually and could tow heavy loads but had too much trouble with the truck so we dumped it. Here is my question: How much can I tow with my 2500HD? The book says only 9500 lbs, other folks tell me the book is really under rated and you can town up to around 12K - is this true?? My fifth wheel weighs around 10500 dry weight and if loaded up to the max it could weigh 12K - I don't plan on loading it up to the max but is around 10-11K an OK weight? Anyone who can help would be great to hear from you