The stock suspension and steering components on your GM 2500HD/3500HD perform adequately, but they lack the clearance for larger wheels and tires, and the steering strength may fall short in heavy-duty applications. Upgrading suspension components like shocks, springs, track bars, and sway bars can significantly enhance the capability and durability of your GM 6.6L Duramax, preparing your truck for demanding tasks like towing and off-roading. Pair your suspension & steering with our selection ofWheels & Tires.GM Duramax Fitments: 2007.5, 2008, 2009, and 2010 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.