This is a replacement light bulb for the Delco GM headlight switch pictured. These bulbs fit 1999, 2000, 2001, 2002 Silverado, Tahoe, Yukon and Suburbans. This is a brand-new, high-quality bulb (not cheap junk from China.) It also has the correct OEM color cap already installed on it so it will be a perfect match to the factory color. Perfect replacement bulbs for ac Delco d1595g and ac Delco d1534g bulb. This bulb will not work in 2003-2006 trucks and SUVs if you need that bulb click here.