Meet Max and Al, the available heavy-duty duo inside the Chevy Silverado HD. Max is Durmax Diesel. Al is the Allison Transmission. With 20 billion proven miles, they've seen it all, done it all, and have the dirt stains to prove it. When you work hard and play hard every day, you develop a certain outlook. And while no one's saying you got to have a fully-boxed steel frame to unlock the secret of life, it sure helps. It's the Art of Heavy-Duty, the Call of the Strong, the Power of Proven Engineering all wrapped into one package. Let them show you the way. The Heavy-Duty Way.