The 2013 GMC Sierra 1500 Hybrid represents the last model year of the second-generation hybrid version of GMC's full-size pickup. It features a two-mode hybrid system that marries a 6.0-liter V8 engine with an electric motor to provide 332 horsepower and 367 pound-feet of torque. A four-speed automatic transmission is standard, and both two-wheel and four-wheel drive options are available. The Sierra Hybrid comes in one well-equipped trim level, which offers features such as Bluetooth connectivity, rearview camera, and navigation with real-time traffic updates, as well as a six-speaker Bose audio system. Despite being a large, rugged pickup truck, the Sierra Hybrid offers remarkable fuel efficiency for its class.