[Part Number] 10383321, 15764135 [Fitment] for Cadillac Escalade; for GMC Sierra; for GMC Yukon; for Chevrolet Avalanche; for Chevrolet Silverado; for Chevrolet Suburban; for Chevrolet Tahoe. [Pros] Sturdy and durable, easy to install. Manufactured according to the original dimensions, fully adapted. [Function] Turn signal relay, also known as the flasher relay, is the component responsible for turning your turn signals on and off whenever you apply a turn signal or hit the hazards. It's an electrical component that functions as a relay, switching on and off continually whenever the button is pressed. [Package] 1x Flasher Relay. Please confirm your car model and OE number before purchasing. Please check relevant operation video when you replace it.