Vehicle-Specific Fitment: Designed specifically for 2007-2013 GMC Sierra 1500, fit for 2007-2014 GMC Sierra 2500 HD/3500 HD, (Not Compatible with 2500HD/3500HD Dually Models /Silverado Models !!! ), (Not Compatible with 2007 Sierra Classic Models), (Not Compatible with 2010-2011 w/921 Backup Light Bulb Models)High-Brightness LED Output: Full LED tail lights deliver stronger and clearer illumination than stock halogen bulbs, improving night visibility and enhancing overall driving safetySequential Lighting & Startup Animation: Dynamic turn signal and animated startup sequence provide clearer signaling while adding a bold, modern look that makes your truck stand outDurable & Weather-Resistant Construction: Built with sealed housing and high-quality materials to protect against rain, dust, and harsh weather conditions, ensuring long-lasting performance in real-world driving environmentsAbout OKSIWA: OKSIWA — With You on Every Mile Specializing in automotive lighting innovation, from sequential LED tail lights to fog lights, headlights, and halogen lamps—helping drivers upgrade visibility, safety, and style