ACDelco GM Original Equipment Multi-Purpose Light Bulbs provide illumination for a variety of purposes and locations in your vehicle, depending on vehicle application, and are GM-recommended replacements for your vehicle’s original components. These multi-purpose bulbs are commonly incandescent filament bulbs and come in a variety of shapes and base styles. These original equipment light bulbs have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.