The Vortec 6.0-liter V8 engine is able to transition between the compressed natural gas (CNG) and regular gasoline and can complete up to 650 miles on a single tank.

General Motors has announced the initial details for the bi-fuel 2013 Chevy Silverado and GMC Sierra 2500 HD. The Vortec 6.0-liter V8 engine is able to transition between the compressed natural gas (CNG) and regular gasoline and can complete up to 650 miles (1,046 km) on a single tank.

The engine will be available in standard or long box body configurations 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. "The addition of a full-size bi-fuel pickup truck to GM's fleet portfolio is another milestone in putting the customer first in everything we do - by offering great products, innovative solutions and a great customer experience."

Prices are yet to be announced, but orders can be placed from April.

Be part of something big