Engine: The standard engine is a 6.6-liter V8 that produces 401 horsepower and 464 pound-feet of torque. You can also upgrade to the Duramax 6.6-liter turbo-diesel V8 engine, which produces 470 horsepower and 975 pound-feet of torque. Transmission: Both engines are paired with a 10-speed automatic transmission. 4WD: The Silverado 2500 HD has a 4WD system with a central transfer case that offers low and high modes. Safety: The Silverado 2500 HD comes with safety features like Automatic Emergency Braking and Lane Departure Warning. Towing: The Silverado 2500 HD has a trailering package and vertical trailer mirror. It also has a Transparent Trailer feature that lets the driver see through a compatible trailer. Interior: The Silverado 2500 HD has a fully redesigned interior with an available 13.4-inch diagonal infotainment touch-screen. Wheels: The Silverado 2500 HD has 20-inch wheels with Goodyear Wrangler A/T tires.