The 2025 GMC AT4X 2500 is a heavy-duty pickup truck that mixes rugged off-road functionality with premium options and know-how. It’s the most succesful and opulent GMC pickup truck ever produced.
The AT4X 2500 is powered by a 6.6-liter Duramax diesel V8 engine that produces 450 horsepower and 910 lb-ft of torque. It’s paired with a 10-speed Allison computerized transmission and a four-wheel-drive system with a locking rear differential. The AT4X 2500 additionally options numerous off-road upgrades, together with a lifted suspension, all-terrain tires, and a entrance skid plate.