The 2021 GMC Sierra 2500HD is a large truck with many beautiful features and five seats to keep your family comfortable and entertained. There are two engine options on this vehicle including a 6.6-liter, V-8 with a six-speed automatic transmission, 401-horsepower, and 464 lb-ft of torque; and a 6.6-liter, V-8, turbocharged, diesel engine with a ten-speed automatic transmission, 445-horsepower, and 910 lb-ft of torque. This vehicle is available as rear-wheel-drive or all-wheel-drive with gas mileage of around a combined 19 mpg. Features include a lift-assist tailgate, LED lighting, Apple CarPlay, Android Auto, wireless charging, an infotainment touchscreen display, a bed view camera, and much more. Safety features include optional driver assistance technologies such as off-road protection, lane-assistance technologies, collision warnings, and adaptive cruise control to name a few.