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A bi-fuel system is available on 2500 HD models with the 6.0-liter engine and extended cab. With it, the truck can run on regular gasoline or compressed natural gas (CNG). Also, the Duramax 6.6-liter V8 diesel engine is now available on 3500 HD chassis cab models.
The 2011 Chevrolet Silverado HD's Duramax turbo diesel's power, torque, maximum conventional and fifth-wheel tow and payload ratings are best in class. Its fifth-wheel tow capability is 21,700 pounds, it can tow up to a 17,000-pound conventional load with its factory-installed hitch, and the Duramax is fully B20 biodiesel compatible.
Changes for 2009 include OnStar 8.0 which allows for Bluetooth capability and Turn-by-Turn navigation with Destination Download on vehicles equipped with the DVD navigation screen. A new rearview camera system is available on Extended Cab and Crew Cab models, and vehicle stability enhancement is added to the 2500 HD trucks with single rear wheels.
Those who haul big loads and tow big trailers need a big truck, and the 2014 Chevrolet Silverado 2500 HD and 3500 HD deliver the size and muscle to get big jobs done. As with their GM corporate cousins, the GMC Sierra 2500 HD and 3500 HD, and the equivalent heavy-duty competitors from Ford and Ram, the Silverado HD trucks are available with a really strong gasoline V8 or a monstrously-strong turbodiesel V8. There are the usual cab configurations and cargo-bed lengths, and trim levels from basic to leather. The Silverado HD delivers enormous towing capacity – although not the best in class – and offers a bi-fuel system that allows running on gasoline or compressed natural gas (CNG) – meaning a potential cost saving, depending upon fuel prices.