Notable heavy-duty equipment found on the truck included an engine oil cooler along with an electrical system consisting of a 105-amp alternator and high-performance battery. Capable of seating up to ...
the 2007 GMC Sierra 1500HD Classic was propelled by a 6.0-liter Vortec V-8 engine producing 300 horsepower and 367 pound-feet of torque. As a heavy-duty truck, this engine was supported by an ...