GMC Sierra 1500 Pickup SL.SLE.SLT WT Model / Hybrid 10-11('10 2nd Design) / '10 2500 / 3500 2nd Design(3500 Single Rear Wheels) / '10-12 2500 / 3500 P / U Single Rear Wheels Tail Light Assembly LH USA Driver Side NSF OEM comparable design to ensure the structural fitment and strength. Exact replacement for factory OEM unit, no modification needed. Assembly meets or exceeds DOT & SAE standards Picture could be Left or Right for demonstration purpose only. LH=USA Driver Side / RH=USA Passenger Side / LH=RH Unit for Either Side / P=Include Both Side(LH&RH) / FLH=Front Driver Side / FRH=Front Passenger Side / RLH=Rear Driver Side / RRH=Rear Passenger Side