6 High Mod & 8 high Mod, for GM Low Beams High Beams & DRL Light On Simultaneously Compatible with 2003-2007 Chevy Silverado GMC Sierra 1500/2500/3500 Classic
Compatible with GMC— 2003-2007 Sierra 1500/2500 HD, 2003 Sierra 1500 HD, 2003-2004 Sierra 2500, 2003-2006 Sierra 3500, 2005-2006 Sierra 1500 HD, 2007 Sierra 1500 Classic/1500 HD Classic/2500 HD Classic/3500 Classic/3500 HD, 2004-2006 Yukon