General Motors is expanding its lineup of heavy-duty pickups and vans fueled by compressed natural gas and propane autogas for the 2017 and 2018 model years, which will bring its alternative fuel lineup to more than 25 vehicles.
GMC Introduces Sierra HD All Terrain X
The 2017 Sierra HD All Terrain X joins Canyon and Sierra 1500 as the third model in GMC’s limited-edition All Terrain X series.