The 2024 GMC Sierra 2500HD, a member of the sixth generation of the model, is a full-size, heavy-duty truck that's ready for just about any task. Buyers have the choice between two engines - a 6.6L V8 engine that generates 401 horsepower and a turbo-diesel 6.6L V8 Duramax that churns out an impressive 445 horsepower. Both variants are connected to either a 6-speed or 10-speed Allison automatic transmission system, with the choice of rear-wheel drive (RWD) or four-wheel drive (4WD). The Sierra 2500HD is available in different trims including the SLE, SLT, AT4, and Denali, offering ascending levels of equipment and sophistication. Key safety features include Forward Collision Alert, Automatic Emergency Braking, Lane Departure Warning, and Front and Rear Park Assist. The infotainment system presents itself with a 7-inch or available 8-inch diagonal screen featuring Apple CarPlay and Android Auto compatibility for seamless connectivity.