The GMC Sierra 3500 door lock switch for the driver's side door in 2000 is a durable switch assembly designed specifically for GMC vehicles. It is a gray color and is a genuine manufacturer part number 15151430. This switch is a performance part that is not universal and is intended for placement on the left front door of the vehicle. Its OE/OEM part number is 15151430, making it a reliable replacement part for the GMC Sierra 3500.