DETROIT - Chevrolet and GMC announced details March 5 of General Motors' bi-fuel 2013 Chevrolet Silverado and GMC Sierra 2500 HD extended cab pickup trucks. Fleet and retail consumers can place orders beginning this April.

The vehicles include a compressed natural gas (CNG) capable Vortec 6.0L V-8 engine that seamlessly transitions between CNG and gas fuel systems. Combined, the trucks offer a range of more than 650 miles. The Silverado and Sierra will be available in standard and long box, with either two- or four-wheel drive.

"The bi-fuel Chevy Silverado and GMC Sierra provide customers with choices in advanced propulsion technology, and because CNG is a clean-burning, domestically produced fuel, it has wide appeal, "said Ed Peper, general manager, GM Fleet and Commercial Operations.

GM is the only manufacturer to offer a single-source option for its gaseous fuel vehicles. The bi-fuel trucks are built with a specially designed engine, the fuel system is installed by GM's Tier One supplier, and the completed vehicle is delivered directly to the customer. This process makes ordering the bi-fuel option as seamless and efficient as a standard vehicle, according to the automaker.

"The bi-fuel truck provides businesses with added re-fueling flexibility and eases consumer range concerns that typically come with CNG, all while reducing emissions and controlling costs,"  said Joyce Mattman, director, GM Commercial Product and Specialty Vehicles.

The bi-fuel commercial trucks will be covered by GM's three-year, 36,000-mile new vehicle limited warranty and five-year, 100,000-mile limited powertrain warranty and vehicle emissions warranty, meeting all Environmental Protection Agency (EPA) and California Air Resources Board (CARB) emission certification requirements.

The trucks are built in Fort Wayne, Ind., and then sent to the Tier One supplier for installation of the CNG bi-fuel delivery and storage system. The entire gaseous fuel system meets GM's strict quality, durability, safety testing, and is covered under the extensive warranty.

Additional information about GM's available advanced propulsion vehicles can be found online at gmfleet.com. Fleet-related questions can be answered by joining the GM Fleet and Commercial Customer Service LinkedIn group.