2025 Silverado 3500hd Specs. The motortrend buyer's guide has the 2025 chevrolet silverado 3500hd specs you need, from dimensions and cargo space to power and mpgs. Find detailed specs and features for the 2025 chevrolet silverado 3500hd including horsepower, engine, capacity, fuel economy, transmission, safety, warranty, drivetrain and more.
As was the case for the 2024 model year, the 2025 chevy silverado hd is offered with two different engines, starting with the naturally aspirated 6.6l v8 l8t gasoline engine,. 6564 cm3 / 399.8 cui, advertised power: