The 2025 GMC 2500HD is a heavy-duty pickup truck manufactured by General Motors. It is part of the GMC Sierra lineup and is designed for commercial and personal use. The 2025 model year brings several updates and improvements to the 2500HD, including a new engine, transmission, and interior.
One of the most significant changes for the 2025 GMC 2500HD is the new 6.6-liter Duramax turbodiesel V8 engine. This engine produces 470 horsepower and 975 lb-ft of torque, which is a significant increase over the previous model year. The new engine is paired with a 10-speed Allison transmission, which provides smooth and efficient shifting.