GMC ≫ SierraGMC Sierra facelift (third generation) photo galleryby Joshua ThompsonFor the 2016 model year, the GMC Sierra gains a new front fascia design with new LED headlights, grille, bumper and driving lights, as well as taillights. 2016 model year GMC Sierra pictured. ◄ PrevNext ►Credit: GMC 2016 GMC Sierra SLT - LED headlights Tags:faceliftgmcmy2016sierrathird generation