2012 GMC Sierra 3500 HD OEM Parts and Accessories
Select The Trim & Engine Of Your Vehicle Below
The catalog for a heavy duty pickup splits in ways that are not obvious from the outside, which is why the model year matters. One-ton heavy duty truck in single and dual rear wheel and chassis cab form.
The parts we ship most for the 2012 GMC Sierra 3500 HD are EGR coolers, front hub assemblies, leaf springs and shackles, steering linkage and drag links and brake rotors and calipers. These are genuine GM parts, engineered by the team that built the vehicle and held to the tolerances the original calibration assumed. 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.
The 2012 Sierra 3500 HD was in the middle of its production run, so the catalog reflects incremental changes rather than a clean break. Diesel and gas trucks share a badge and very little else through the cooling, exhaust and fuel systems.
Run your VIN before ordering. It takes a few seconds and it is the difference between installing the part and shipping it back. We ship from Dallas, and in stock orders placed by 3pm Central usually go out the same business day. Cross-shopping a related truck? The 2012 GMC Sierra 1500 is the closest thing in the lineup that year.