GM's bi-feul trucks are hitting the market this month.

General Motors has announced pricing for its bi-fuel pickup truck lineup. GM's bi-fuel technology, which allows a vehicle to run on compressed natural gas or gasoline, will be available on its Chevrolet Silverado and GMC Sierra 2500 heavy-duty models.

GM says the bi-fuel option will add $11,000 to the sticker price of both trucks. The Silverado HD and Sierra HD share the same base price of $29,100, so buyers can expect to pay $40,100 for the ability to run on CNG in addition to gasoline.

Both trucks use a version of GM's 6.0L Vortec V8 that the automaker says can seamlessly transition between CNG and gasoline. CNG is stored in a single light-weight Type 3 tank in the bed, giving the trucks a combined CNG and gas range of 650 miles.

"The announcement of the bi-fuel Silverado and Sierra has been well-received among customers, which sends a clear message that businesses are looking for alternative fuel options to meet their needs," said Ed Peper, general manager, GM Fleet and Commercial Operations.?' "The addition of the full-size bi-fuel pickups to our product portfolio is part of our commitment to offer great products, innovative business solutions and an exceptional customer experience."

CNG prices are currently equivalent to $1.89 per gallon of gasoline, meaning bi-fuel truck owners could save up to $10,000 during the first three years of ownership.

The bi-fuel trucks - which can be had in a number of different configurations - carry GM's three-year, 36,000-mile new vehicle limited warranty and five-year, 100,000-mile limited powertrain warranty. Fleet and retail customers will be able to place orders for the bi-fuel trucks on April 19.