The Chevrolet Silverado 2500HD is a heavy-duty pickup truck produced by General Motors. The 2025 model year is expected to bring significant updates to the Silverado 2500HD, including a new engine, transmission, and interior.
The 2025 Silverado 2500HD is expected to be powered by a new 6.6-liter Duramax diesel engine. This engine is expected to produce more horsepower and torque than the current 6.6-liter Duramax engine. The new engine will be mated to a new 10-speed Allison transmission. This transmission is expected to provide smoother shifts and better fuel economy than the current 6-speed transmission.