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.
The heavy-duty truck crowd isn't a particularly tough one to satisfy. If you haul heavy objects, you're going to need some muscle and that's exactly what the 2015 Chevrolet Silverado 2500 and 3500 HD trucks offer. Like its corporate sibling – the 2015 GMC Sierra 2500 and 3500 HD – the Silverado HD is General Motors' response to Ford's F-Series Super Duty and Ram HD trucks. Both the Silverado 2500 and 3500 HD offer your choice of a 6.0-liter V8 gasoline engine and a 6.6-liter Duramax turbodiesel V8, the latter being legendary in its own right. The choices go on from different cab configurations to bed lengths to trim levels. While it's not the brawniest in class, the Silverado HD has plenty of brute strength to get the job done.