Utilizing the most advanced technology in blind spot detection, Lane Change ALERT-CAM warns the driver of approaching objects that are beyond the range of the vehicle's side mirrors. Housed in a clean, unified one-piece mirror designed to fit seamlessly like an OE part, the built-in camera detect vehicles, motorcycles or pedestrians approaching the car's blind area from behind. A bright LED gives the driver a visual warning and an audible beep if he uses his turn signal to attempt a lane change. For added safety, arrow turn signals in the mirror lenses make this system the most advanced on the road today. Please check for specific vehicle fitment. 2007 and up Chevrolet (Chevy) Avalanche, Silverado, Suburban, Tahoe; 2007 and up GMC Sierra, Sierra Denali, Yukon and Yukon XL, Yukon Denali, Yukon XL Denali; 2007 and up Cadillac Escalade. Mirror specifications: Heated power, manually extendable for towing, dual mirror lens, foldaway capabilities.