Powered by a LQ9 6.0L V8 engine, the GMC Sierra is rated at over 345 hp and produces 395 lbs of torque. Comprised of many powerful GMC Sierra parts, this vehicle holds a towing capacity of well over 9,000 lbs and with a hauling load of 1,600 lbs. It also came in a multitude of trims and editions. The luxury edition GMC Sierra C3 is the only half-ton pickup that featured a 6.2L engine. It is rated with 403 hp and 417 lbs of torque coupled to a six speed transmission. Heavy duty versions of the GMC include: 1500HD, 2500HD, and 3500HD. They are available in several engine options: Vortec60000 V8 with 300 hp, Duramax V8 with 360hp and Vortec8100 V8 with 340hp. These heavy duty versions use strengthened body framed which help to increase the towing capacity to over 16,000 lbs. Whether you are looking for timing belts, oil filter, air filter, brake pads, fuel injectors or other GMC Sierra parts, we stock them all.