Sierra 1500 is available in several trim packages, including Work Truck, SL (crew cab and extended cab), SLE and SLT, along with 2WD and 4WD configurations.

Built on GM's full-size truck platform, the Sierra incorporates features such as a fully boxed frame - with a hydroformed front section -- coil-over-shock front suspension and rack-and-pinion steering. It also has wide front and rear tracks that enhance stability and driving confidence through a more secure road feel.

Click the attached link below to view the complete factory technical specifications of the 2012 GMC Sierra 1500 in .pdf format.