2003-2006 Chevy Silverado 1500/2500/3500;. 2007 Chevy Silverado 1500/2500/3500 classic;. 2003-2006 Yukon/Yukon XL 1500 /Yukon XL 2500;. Interface: 24+7 pin connector on the back (matches original electrical connections for plug-and-play installation).
