The 2025 GMC 2500 AT4X is a heavy-duty pickup truck that mixes off-road functionality with premium options. It’s the most succesful off-road pickup truck within the GMC lineup, and it comes commonplace with a wide range of options which can be designed to make it extra succesful in off-road conditions. These options embody a lifted suspension, all-terrain tires, and a locking rear differential.
The 2025 GMC 2500 AT4X is powered by a 6.6-liter Duramax diesel engine that produces 445 horsepower and 910 lb-ft of torque. This engine is paired with a 10-speed Allison automated transmission. The 2025 GMC 2500 AT4X has a most towing capability of 18,500 kilos and a most payload capability of three,800 kilos.