2020-2023 GM HD Smoked LED Sidemarkers Set (DIODD5127)If you are looking to give your GMC Sierra HD a major styling upgrade without the complexity of extra wiring, the Smoked Standard LED Sidemarkers are the perfect solution. These markers are a complete, plug and play replacement for your factory fender lights, offering a much more modern and aggressive look than the stock units. The Smoked lens option provides a dark, blacked out appearance that blends seamlessly with the factory trim when the lights