Fitment: compatible with 1999 - 2006 Chevy Silverado GMC Sierra 1500, 1999 - 2004 Chevy Silverado GMC Sierra 2500, 2001 - 2006 Chevy Silverado 2500 HD 3500 Tahoe & GMC Sierra 2500 HD 3500 Yukon Yukon XL Denali, 2000 - 2006 Chevy Suburban 1500 2500 & GMC Yukon XL 2500, 2002 - 2006 Chevy Avalanche 1500 2500, 2001 - 2003 Chevy Silverado GMC Sierra 1500 HD, 2005 - 2006 Chevy Silverado GMC Sierra 1500 HD, 2007 Chevy Silverado GMC Sierra Classic Package contents & dimensions: the left trailer mirror (driver side) with 12" x 7" plane mirror, manual folding for easily passing narrow space and avoiding crashes Functions: featuring manual adjustable plane mirror, manual folding, the multifunctional side mirrors can strikingly enhance your driving experience Easy to install: just simply connect the plugs of the trailer towing mirror to the corresponding power cord, no drilling or modifications required（professional installation would be highly recommended） Note: please check if your vehicle has the same functions as that of towing mirrors, such as turn signal, otherwise some functions of towing mirrors will be disabled when the vehicle does not possess the corresponding functions