This 2021 GMC Sierra 2500HD AT4 is a used pickup truck with a mileage of 124,346 miles. It features a Summit White exterior complemented by a Jet Black interior with Kalahari accents, though the standard colors are white and black. Powered by a 6.6-liter turbocharged diesel engine with 8 cylinders, it produces a maximum of 445 horsepower at 2800 RPM and 910 lb-ft of torque at 1600 RPM. The vehicle is equipped with a 10-speed automatic transmission and a 4WD drivetrain, making it suitable for challenging terrains and heavy-duty tasks. With four doors and seating for five, this model combines robust performance with practicality.