The 2006-2007 GM 2500HD/3500HD is designed to be a towing powerhouse, but without a heavy-duty hitch, you won't be able to fully harness its towing potential. Our selection of hitches for the GM 2500HD/3500HD is built from robust materials to provide the strength and stability needed to tow massive haulers, fifth wheels, campers, horse trailers, and more. We offer a variety of options, including class 3, class 5, and bed-mounted hitches, ensuring you can pull heavy loads with ease. Be sure to check out our excellent selection of Receivers. GM Duramax Fitments: 2006, 2007 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.