TYC 20-6820-00-9 Headlight Assembly - Left

Overview of TYC CAPA Certified Headlight Assembly

The TYC CAPA Certified Headlight Assembly 20-6820-00-9 is designed specifically for GMC Sierra 1500, Sierra 2500 HD, and Sierra 3500 HD models. This left-side complete headlight assembly includes all necessary halogen bulbs and features durable plastic lens and housing materials for reliable exterior lighting performance.

• Complete headlight assembly with bulbs included
• Clear and amber plastic lens for optimal visibility and signaling
• Halogen bulbs for low beam, high beam, front signal, and park lamp included
• Durable plastic housing designed for exterior lighting applications
• Left side fitment for GMC Sierra 1500, 2500 HD, and 3500 HD
• SAE/DOT compliant for safety and regulatory standards

Detailed Product Features and Specifications

This TYC headlight assembly (part number 20-6820-00-9) is engineered to meet the lighting needs of GMC Sierra trucks, including the 1500, 2500 HD, and 3500 HD models. The assembly includes halogen bulbs for all lighting functions: low beam, high beam, front signal, and park lamp, ensuring a complete replacement solution. The lens combines clear and amber colors to provide both effective illumination and proper signaling. Constructed with plastic lens and housing materials, this assembly balances durability with weight considerations. The product is SAE/DOT compliant, meeting federal safety standards for exterior vehicle lighting.

About the CAPA Certified Product Line

The CAPA Certified line from TYC represents parts that comply with the Certified Automotive Parts Association standards. This certification ensures that the headlight assembly meets strict quality and performance criteria, providing a reliable replacement option for GMC Sierra vehicles. The CAPA Certified designation indicates that this part has undergone rigorous testing for fit, finish, and function, aligning with OEM specifications.

Common Applications and Problem Resolution

• Replacement of damaged or cracked headlight lens or housing
• Restoring proper low and high beam lighting performance
• Fixing malfunctioning front signal or park lamp bulbs
• Upgrading to a complete assembly for improved exterior lighting reliability
• Ensuring compliance with SAE/DOT lighting regulations

Installation Notes and Tips

Installation of the TYC 20-6820-00-9 headlight assembly is straightforward for GMC Sierra 1500, 2500 HD, and 3500 HD models. Since the assembly comes with all required halogen bulbs pre-installed, it reduces installation time and complexity. It is recommended to disconnect the vehicle battery before installation to avoid electrical issues. Verify the left side fitment and ensure all electrical connectors are securely attached. Adjust headlight aim after installation to maintain proper road illumination and compliance with local regulations.

Quality Assurance and Warranty Information

TYC’s CAPA Certified headlight assembly is manufactured to meet industry standards for durability and performance. The part number 20-6820-00-9 is backed by TYC’s quality assurance processes, ensuring consistent fit and function. While specific warranty details may vary, CAPA Certified parts typically come with a limited warranty covering defects in materials and workmanship, providing confidence in the product’s reliability for GMC Sierra truck owners.