The 2015 Sierra All Terrain HD trucks naturally come standard with four-wheel drive with an electronically controlled transfer case to handle things in the dirt. The Z71 off-road package is also ...
To get an All Terrain X package, you must buy a Sierra 1500 4WD crew cab with a short box in SLT trim. Although it looks great in black, the truck can also be had in white, blue, iridium metallic ...