🔐【Fitment】Replacement for Silverado Sierra 1500 2014-2018; 2019 Silverado 1500 LD Sierra 1500 Limited; 2500HD 3500HD 2015-2019 🔎【All-in-One Sealing Gasket】The brake light adopts one-piece sealing gasket, using ultrasonic technology, high sealing, tight fit, perfectly matching your car; It is a very durable seal with improved durability over the OE factory seal 💡【Mount Stop Light】High mount stop light assemblies have a 5-second strobe function switch, you can choose whether to enable the strobe function or not 💧【IP67 Waterproof】The led stop lights adopts IP67 waterproof technology, durable under heavy rain and snow weather 🔧【Easy Installation】Perfectly replace factory parts, no re-wiring or modification to factory harness needed. With SAE Approved & DOT Certified.24 Hour Service if there's any product problem and installation Replacement for Silverado Sierra 1500 2014-2018; 2019 Silverado 1500 LD Sierra 1500 Limited; 2500HD 3500HD 2015-2019 Replacement Part Number: 23509162, 20979071, GM2890109 Supersession(s):84690395; 84900397