Find the Truck Racks & Cargo Carriers you need for overlanding or off-roading in your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax. Side rails, chase racks, and universal roof racks & roof rack mounts are some of the products offered for your ride. These products provide extra cargo capacity for tools or camping gear. Brands like Addictive Desert Designs, BackRack, ZROADZ, and Putco are some of the superior brands XDP carries.