Get the big jobs done with this one-ton truck. From hauling to towing it is ready for your toughest jobs. When you encounter slick or muddy roads, you can engage the four wheel drive on the vehicle and drive with confidence. This model offers Android Auto for seamless smartphone integration. Apple CarPlay: Seamless smartphone integration for this model - stay connected and entertained on the go! It has a diesel engine. Tow that heavy loads with more confidence thanks to the dual rear wheels on this GMC Sierra. The vehicle has a V8, 6.6L high output engine. This unit is outfitted with an OnStar communication system.