The 2025 GMC Sierra 2500HD is a part of GMC's fourth generation lineup of heavy-duty trucks. It is available with RWD, with optional 4WD across all four trims - Base, SLE, SLT and Denali. Engine options for Sierra 2500HD include a 6.6 L V8 delivering 401 hp and a 6.6 L turbodiesel V8 ramping up to 445 hp. Both engines are mated to a 6 speed and a 10 speed automatic transmission respectively. The truck is also teeming with safety features such as lane departure warning, front and rear parking sensors, blind spot monitor, and cross traffic alert, ensuring a safe driving experience. On the tech side, it comes with a 7.0-inch or optional 8.0-inch touchscreen, Apple CarPlay, Android Auto, and a wifi hotspot. The high-end Denali trim features a premium leather interior and a Bose audio system, solidifying the Sierra 2500HD's position as a luxurious yet capable workhorse.