▶ Fitment Guide: Compatible with 2014 2015 2016 2017 2018 Chevy Silverado/GMC Sierra 1500; Compatible with 15 16 17 18 Chevy Silverado/GMC Sierra 2500HD 3500HD. (Fit Model with Cargo Light) ▶ Quality Assurance: Our brake lamp Lens, made out of superior PC plastic, is acid and alkali resistant, weather resistant and impact resistant. Low power consumption and energy saving, long service life. ▶ Waterproof Design: This 3rd Brake Light made from OE Grade ABS materials with high-density foam mounted back, IP67 waterproof, helps prevent from dirt, dust, mud, snow or heavy rain. ▶ Simple Installation: Just plug and play, using existing bolt holes for installation. (Note: Harness Pin may need modification to match the vehicle.) ▶ Warranty& Service: We truly offer 1 year warranty with sincere customer service. If you have any questions, please feel free to contact us and we will reply. Cxdar 3rd Brake Light Compatible with 2014 2015 2016 2017 2018 Chevy Silverado/GMC Sierra 1500; Compatible with 2015-2018 Chevy Silverado/GMC Sierra 2500HD 3500HD. (Fit Model with Cargo Light)