【Fitment】2003-2006 Cadillac Escalad/Cadillac Escalade ESV/Cadillac Escalade EXT/Avalanche 1500/Avalanche 2500/Silverado 1500, 2007 Silverado 1500 Classic/Silverado 1500 HD Classic/Silverado 2500 HD Classic, 2003 2005 2006 Silverado 1500 HD, 2003 2004 Silverado 2500, 2003-2006 Silverado 3500/Suburban 1500/Suburban 2500/Tahoe 【Fitment】2003-2006 GMC Sierra 1500/GMC Sierra 2500 HD/2003-2006 GMC Sierra 3500/GMC Yukon/GMC Yukon XL 1500/GMC Yukon XL 2500, 2007 GMC Sierra 1500 Classic/GMC Sierra 1500 HD Classic/Sierra 3500 Classic GMC/GMC Sierra 2500 HD Classic, 2003 2005 2006 GMC Sierra 1500 HD, 2003 2004 GMC Sierra 2500 【Reference Number】Replace Part Number: 128-04034L, 56318, 88944391,(4.53" Mounting Back plate is attached for an easy installation. ) 【High Quality】 Made of High Quality Glass for Durability and Clarity, and the glass will not haze. Offer better visibility, improving the safety of you. Made to exact specifications. 【Note】It is very important to measure your glass to ensure that you are ordering the correct mirror for your vehicle.Also, pay attention to the shape of your mirror and compare to the shape of the replacement mirror.If you have any questions, please feel free to consult online at any time. Driver Left Side View Heated Mirror Glass Fits for 2003-2006 Chevy Silverado Suburban Tahoe, GMC Sierra Yukon 2007 Classic Exterior Mirror Glass