The 2025 GMC Sierra 2500HD AT4X is a heavy-duty pickup truck manufactured by GMC, a division of Common Motors. It’s the most succesful and off-road-oriented variant of the Sierra 2500HD lineup, designed for excessive terrains and difficult driving circumstances.
The 2025 Sierra 2500HD AT4X boasts spectacular options, together with a high-performance 6.6L Duramax turbodiesel V8 engine, delivering as much as 470 horsepower and a staggering 975 lb-ft of torque. It comes geared up with a 10-speed Allison transmission, offering clean and environment friendly gear modifications. The truck’s off-road prowess is enhanced by its superior four-wheel drive system with an digital locking rear differential, permitting it to sort out rugged terrains with confidence.