Item For 14-18 Chevy Silverado Sierra Chrome Power Heated LED Signal Tow Mirrors - The auction item is 100% in original box. - Made by ultra strong and light weight Chrome Cap - Comes with 1 pair of towing trailer style side mirrors with heated defrost function. (Heated defrost function only applies vehicles originally come equipped with power heated mirrors.) - Mirror glass measurement 12" * 7.5". - Mirrors can manually and telescopically extend. - Full-extended length (from base) 21". - Closed length (from base) 17". - Big Glass are power adjustable. - Convex spotter glasses are manually adjustable. - Provides better and wider angle of rear view. - Improves visibility and reduces blind spot. Upgrades on road safety. - Professional installation is highly recommended.Installation Instruction is Not Included. Vehicle Fitment 2014-2017 Chevy Silverado 1500 2015-2017 Chevy Silverado 2500 HD 2015-2017 Chevy Silverado 3500 HD 2014-2017 GMC Sierra 1500 2015-2017 GMC Sierra 2500 HD 2015-2017 GMC Sierra 3500 HD [2-Door Regular Cab ; 4-Door Extended Cab ; 4-Door Crew Cab] ATTENTION COMPATIBLE ON MODELS W/ POWER HEATED MIRRORS ONLY ATTENTION SOME MODELS MAY REQUIRE ADDITIONAL JUMPER HARNESS GM 23387133 Item Notes These mirrors will only work properly on vehicles with these exact options. If your vehicle does not have the options listed, these mirrors may not function properly. Item Include 2 Pcs (Left & Right) PAIR TOWING TRAILER SIDE MIRRORS Tow Mirrors For 2014-2018 Chevy / GMC