【Fitment】: AUTOONE LED side marker lights compatible with 2020-2025 GMC Sierra 2500HD 3500HD ensuring a perfect fit and seamless integration with your vehicle's body. Direct LED replacement for the side marker lights for GMC Sierra 2500HD 3500HD, the OEM number: 84806032, 84185031. 【Easy to Install】: AUTOONE LED side marker lights for 2020-2025 GMC Sierra 2500HD 3500HD is a plug-and-play replacement for the factory fender lights, the LED marker light kit is designed to work without any modifications. Easy to installation, just unplug the old side signal lights and insert the new automotive LED side marker lights. No error codes, no flickering, hyper-flashing, or radio interference. 【High Brightness】: AUTOONE LED side marker lights for 2020-2025 GMC Sierra 2500HD 3500HD utilize the latest double row of lamp beads and high power led chips wit. 500% brighter than regular bulbs for better visibility, it can make the reminder function of turn signal light becomes additional obvious in the course of driving and gets rid of the dim light from now on. 【IP67 Waterproof】: AUTOONE LED side marker lights for 2020-2025 GMC Sierra 2500HD 3500HD made of ABS plastic housing and PC lens kit, shockproof and dustproof, using IP67 waterproof material, protect LED lamp from sand, rain and even in bad weather and environment, in order to ensure our driving safety and avoid dangerous situations. 【Longer Lifespan】: Crafted from high-quality materials, AUTOONE LED side marker lights for 2020-2025 GMC Sierra 2500HD 3500HD provides exceptional durability and resistance to harsh weather conditions, the LED bulbs have a longer lifespan compared to traditional halogen bulbs, ensuring reliable performance and reduced maintenance, making it ideal for long-term use on your vehicle. ensuring reliable and consistent performance for years to come. Upgrade your vehicle's exterior with the AUTOONE White LED Side Marker Lights, designed specifically for the 2020-2025 GMC Sierra 2500HD and 3500HD. This premium lighting solution features a sleek smoked lens that enhances the aesthetic appeal of your pickup while providing superior visibility and safety on the road. These side marker lights serve multiple functions as both parking position lamps and front & rear turn signal lamps, ensuring that you are seen by other drivers in any driving condition. The advanced LED technology offers a bright, crisp light output that surpasses traditional incandescent bulbs, improving reaction times and overall road safety. Installation is straightforward with a plug-and-play design, allowing you to easily replace your factory side marker lights without any modifications required. Each package includes four high-quality lights, perfectly tailored to fit your GMC Sierra, ensuring a seamless look that blends beautifully with your truck's design. Elevate your vehicle's lighting with the AUTOONE White LED Side Marker Lights, and experience the perfect combination of style, functionality, and durability. Whether you're cruising through the city or tackling rough terrain, make sure your GMC Sierra 2500HD or 3500HD stands out with these enhanced lighting solutions. Order yours today!