The 2015 Chevrolet Silverado Heavy Duty bi-fuel pickup is being marketed to fleet operators.

I get it. Thatís the biggest piece of the pie and from a business standpoint, it makes sense to roll out this amazing pickup by telling the folks most likely to purchase it right out of the gate.

That said, anyone in the market for a heavy-duty pickup should absolutely, positively put the 2015 Chevrolet Silverado HD bi-fuel on their test drive list.

For starters, it operates on either regular unleaded gasoline or compressed natural gas (CNG). The driver can switch from one to the other with just the flip of a button on the console. Or, you can just operate in CNG mode until that tank is empty and it automatically switches to gasoline mode. With both systems, it gives the truck a range of up to 650 miles and can tow up to 13,000 pounds in either mode.

Let me put this another way. This week CNG is priced around 62 percent less per gallon than gasoline. If you drive 26,000 miles a year, thatís a savings of more than $2,000 based on 75-percent CNG usage. CNG is also cleaner burning and most of the natural gas used in the U.S. comes from domestic sources.

Unlike comparable aftermarket systems, this is completely covered under the GM powertrain warranty of five-years/100,000-miles. And, itís available at 3,000 Chevy dealerships across the country.

Other than the indicator light on the instrument panel, I couldnít tell when I was using gas and when I was using CNG. Itís seamless.

The 6.0-liter bi-fuel V-8 engine is a workhorse, delivering 360 horsepower and 380 lbs.-ft. torque (in gas mode). Itís mated to a six-speed automatic transmission and is available on both 2500 and 3500 series HD models.

Another reason itís being marketed (initially) to fleets is that CNG refueling stations arenít as abundant as gas stations. But they are growing in number.

Thankfully, thereís an app that you can download on your phone and gives you pinpoint directions to the nearest CNG refueling station.

Available in both 2500 and 3500 HD models, the bi-fuel truck is available in Work Truck, LT and LTZ trim levels, and offered in regular cab, double cab and crew cab configurations. Consumers also have the option of a 6-feet, six-inch or 8-feet bed with standard CornerStep bumpers, EZ Lift-and-Lower tailgates and other cargo handling features.

Updates for the 2015 HD models also include:

ē All new cabs and interiors with increased comfort and extensive storage space

ē Chevrolet MyLink, which provides connectivity for work or family with simple, intuitive controls

ē Integrated cruise control and auto grade braking to help make trailering easier

ē Standard StabiliTrak with trailer sway control.

Without question, this is a phenomenal truck.

Neal White has been covering the automotive industry for more than 20 years and is affiliated with the Texas Auto Writers Association.

The Nuts and Bolts

MODEL:

2015 Chevrolet Silverado HD Bi-Fuel

(specifications for HD bi-fuel model only and does not include entire HD lineup)

2, 3, 5, or 6-seat 3/4-ton or 1-ton pickup

Rear- or four-wheel drive

Regular cab, double cab or crew cab body styles

6-feet, 6-inch or 8-feet bed length

Trim packages:

WT, LT and LTZ

PRICE RANGE:

Starting around $40,000

ENGINE:

6.0L V8 (360 hp/380 T in gas mode)

TRANSMISSION:

6-speed automatic

FUEL: Regular unleaded or CNG

STABILITY CONTROL:

StabiliTrak stability control

BRAKES: ABS

LENGTH: 224.4/230/248.9/239.5/ 258.4 inches

WHEELBASE: 133.6/144.2/158.4/153.7/ 167.7 inches

WIDTH: 80.5/96 inches (single rear axle/double rear axle).