CURT Protective MultiPro / Multi-Flex Tailgate Sensor with 2-1/2 Model 58268 Protect your GMC Sierra MultiPro tailgate or Chevrolet Silverado Multi-Flex tailgate from costly damage from trailer hitch accessories. This hitch cap sensor detects if there is a hitch accessory installed in the receiver tube and prevents the inner tailgate from folding down and hitting the ball mount or other accessory. This Chevrolet / GMC tailgate sensor installs easily with everything included in the kit. It requires no extra electronic components and installation does not require cutting or splicing. This Chevy / GMC tailgate saver fits virtually any 2-1/2-inch x 2-1/2-inch trailer hitch receiver. It has a sleek, durable design for use on work trucks, and it will not interfere with your hitch accessories or trailer. Prevents deployment of inner tailgate panel when ball mount is installed Helps avoid costly Chevrolet / GMC tailgate damage Easy installation requires no wire cutting or splicing No extra electronic components or batteries required Sleek, durable design suited for all work conditions IP67-rating for water submersion and dust protection Does not interfere with trailer or towing accessories Fits standard 2-1/2" x 2-1/2" receiver