The 2025 GMC AT4X 2500 is a heavy-duty pickup truck that combines rugged off-road capability with premium features and technology. It is the most capable and luxurious 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 is paired with a 10-speed Allison automatic transmission and a four-wheel-drive system with a locking rear differential. The AT4X 2500 also features a number of off-road upgrades, including a lifted suspension, all-terrain tires, and a front skid plate.