Upgrade or replace your 2015-2017 GMC Yukon / Yukon XL headlight with this genuine GM OEM HID/Xenon/halogen headlight assembly for the driver side (left/LH) (OEM part #84155709). This direct-fit replacement is engineered to fit SLE / SLT / Denali trims, matching factory specifications for a precise, plug-and-play installation. Restore crisp, road-legal HID/Xenon output and OEM appearance with a refurbished assembly backed by guaranteed fitment, fast shipping, and a hassle-free fit on your GMC Yukon / Yukon XL.