2011 GMC Sierra 3500 HD Parts and Accessories
Select The Trim & Engine Of Your Vehicle Below
Getting parts right on a heavy duty pickup starts with knowing which generation you are working on. One-ton heavy duty truck in single and dual rear wheel and chassis cab form.
2011 is a carryover year for this vehicle. That makes sourcing simpler in the mechanical systems and no simpler at all in trim and body. GM made running changes mid-year on several heavy duty components, so the correct part can depend on build date rather than model year alone.
The parts we ship most for the 2011 GMC Sierra 3500 HD are transfer case components, fifth wheel and gooseneck hardware, trailer brake controllers, mirror assemblies and tailgate hardware. Everything on this page is a factory GM part, built to the original specification and carrying the original part number. On a heavy duty pickup these are the components that carry load and heat, and they are where an aftermarket substitute costs you the job twice.
The catalog is organized by assembly group rather than by symptom, which trips people up. If you know what failed but not what it is called, give our specialists the symptom and the VIN and they will find the group it lives in.
If you are not certain which version you have, give us the VIN and we will confirm fitment before you check out. In stock orders placed by 3pm Central typically leave our Dallas warehouse the same day, so most of the country sees short transit times. For a different year of the same vehicle, our full GMC Sierra 3500 HD catalog lists every year we cover.