Value Line. LT REAR SENSOR BRACKET OUTER CHEVROLET SILVERADO 1500 19-C. 2019-2026 Chevy Silverado 1500. 2020-2023 Chevy Silverado 2500. 2020-2026 Chevy Silverado 3500. A bumper is a shield made of steel, aluminum, rubber, or plastic attached to the front and rear end to protect you and your vehicle in a crash.