DETROIT, 2014-04-15 – Bi-fuel options, allowing either compressed natural gas or gasoline to power the 2015 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD pickups, will start at $9,500.

Every single 2500 and 3500 can now be had with a CNG-capable engine no matter what the cab style, though trucks with dual rear wheels ... There are two separate fuel tanks, and the driver can ...