Posted in GMC, GMC Sierra, new cars GMC Sierra All Terrain X Special Edition Goes Official Author: Cristian Gnaticov Published Date: January 27, 2016 GMC has introduced the new Sierra All Terrain X Special Edition, a pickup variant that features a more aggressive look and added off-road-oriented equipment.Read more » Related News GMC Sierra Elevation Edition Returns For 2016GMC will continue to offer the Elevation Edition for 2016 with the styling upgrades and other features new to the… GMC Sierra Elevation Edition Returns For 2016GMC will continue to offer the Elevation Edition for 2016 with the styling upgrades and other features new to the… 2016 GMC Sierra HD Gets New TechnologiesGMC has added technology updates to the 2016 Sierra HD lineup, as well as new new colors and headlights with… GMC Launches 2017 Sierra HD All Terrain X Paired With All-New Duramax DieselJoining the likes of the Canyon and Sierra 1500 this fall as the third model in GMC's limited-edition All Terrain…