Manufacturer Part Number:599-210XD, 599210XD, 599-210, 599210. 2003-2006 Chevy Silverado 1500/2500/3500;. 2007 Chevy Silverado 1500/2500/3500 classic;. Interface: 24+7 pin connector on the back (matches original electrical connections for plug-and-play installation).
