The 2013 bi-fuel Chevrolet Silverado HD includes a compressed natural gas (CNG) capable engine that seamlessly transitions between CNG and gas fuel systems. Combined, the truck offers a range of more than 650 miles. The trucks use a 17-gallon Type 3 CNG tank made from composite material with aluminum liner and carbon fiber wrap. GM placed a collar around the head of the tank for further safety.
GM mounts the tank through the bed of the truck to the frame; the fuel door is high up and out of the impact area. All of the high pressure fuel lines run inside of the frame rails.