The 2004.5-2005 GM 2500HD/3500HD truck is designed to be a towing powerhouse, but without a heavy-duty hitch, you won't be able to maximize your GM's towing capacity. Our selection of hitches for the GM 2500HD/3500HD is crafted from heavy-duty materials, providing your truck with the strength and stability needed to tow massive haulers, 5th 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 your heavy loads with ease. Be sure to check out our excellent selection of Receivers.GM Duramax Fitments: 2004, 2005 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.