The AT4x takes off-roading to the next level without compromising the proven performance you expect from the GMC Sierra lineup. Coming standard with the 6.2L V8 and front and rear e-locking differentials- a combination not offered by any competitors in its class. IN STOCK at Clift Buick GMC TODAY! Call, Click, or Visit Us to check out the AT4x! 📱(517)265-6107 https://bit.ly/SierraAT4x