GMC's Sierra All Terrain X reminds us of Marty McFly's dream pickup (pictures)
GMC's 2016 Sierra All Terrain X is a grouping of options that gives the full-size pickup additional off-road prowess and attitude. We can't help be reminded of Marty McFly's "Back to the Future" rig, even though this truck isn't from Toyota.
The Sierra All Terrain X is an extension of GMC's All Terrain package, itself an extension of the Sierra 1500 4WD SLT Crew Cab/Short Box configuration.
The "X" package adds black wheels with mud tires, black side steps, off-road LED lighting, LED headlights, a louder exhaust system, body-color door handles and numerous bits of blacked-out exterior trim pieces.