Applicable Scenarios: Exterior maintenance, repair, and upgrade of GMC Sierra 1500 19-21 vehicles. Suitable for professional automotive repair shops, DIY enthusiasts, and GMC vehicle owners looking to replace worn or damaged exterior components. Compatible with 15 model years. Product Features: High visibility output, durable housing, water-resistant, OEM-compatible, easy installation, long service life. Engineered to provide seamless integration with your GMC vehicle's existing systems and maintain the original aesthetic appeal. Performance: Meets or exceeds GMC OEM specifications, designed for optimal performance in various weather conditions, resistant to fading, cracking and corrosion, ensures proper functionality and long service life. Each component undergoes strict quality control inspections to ensure reliability and performance under all driving conditions. Brand: GMC-compatible replacement part. Manufactured to meet GMC's rigorous standards for quality, fit, and performance. Origin: Produced in ISO-certified facilities using high-grade materials to ensure consistent quality and reliability. Specifications: Part Number - 84772473; OEM Reference - 84772473/84772474; Dimensions - 45mm (Length) x 48.0mm (Width) x 23mm (Height); Material - Premium automotive-grade plastic/metal (depending on component type); Finish - Factory-matched (typically black, chrome, or vehicle-specific color); Installation - Direct OEM replacement, no modifications needed.