Total Landscape Care Digital Magazine
Issue link: http://read.dmtmag.com/i/356210
A U G U S T 2 014 To t a l L a n d s c a p e C a r e . c o m 4 9 A whoosh, like connecting an air hose to a com- pressor, is the only thing that lets me know I'm in business fi lling the bed-mounted fuel tank in the 2015 Chevy Silverado CNG I'm driving. Moments after turning on the pump, the digital readout on the dispenser rapidly clicks off the gallons as fuel under 3,600 psi streams into the tank. In what seems to be less than a minute, the readout stops at 11.7 gge (gasoline gallon equivalent). I tap the CNG switch at the far end of the row of auxiliary switches along the bottom of Silverado's center console and up pops the CNG fuel gauge's bar graph on the digital dash display; it's blue all the way to the full mark. The toggle switch's indicator light blinks for a few seconds then remains on, indicating the truck's bi-fuel system has switched over to CNG and, in doing so, switches to a separate engine control module (ECM). Good to go. CNG vs. gasoline Using two separate ECMs was the only way the GM Road Test: 2015 Chevy Silverado 2500HD Behind the wheel of Chevy's heavy-duty, bi-fuel CNG 4x4 work truck BY BRUCE W. SMITH