TYC 20-9142-80 Headlight Assembly - Left

TYC Headlight Assembly for GMC Terrain

This TYC Regular headlight assembly, part number 20-9142-80, is a direct-fit exterior lighting replacement for the left side of a 2016-2017 GMC Terrain. It includes the bulbs and uses a clear and amber lens with a halogen bulb setup for the low beam, high beam, park lamp, front signal, and front side marker functions.

Key Features

• Fits 2016-2017 GMC Terrain, left
• TYC Regular replacement headlight assembly, part number 20-9142-80
• Bulbs included for a complete lighting assembly
• Halogen bulb type for low beam, high beam, park lamp, front signal, and front side marker light
• Clear and amber lens with plastic lens and housing construction
• SAE/DOT compliant for road-use requirements
• Cross-reference part numbers include GMC 84791978 and Partslink GM2502436

Detailed Description

Built for the left side of the GMC Terrain, this TYC headlight assembly restores exterior lighting performance with a halogen-based design and integrated bulbs. The clear and amber lens, along with the plastic housing and lens materials, provides a service replacement solution for vehicles needing a front lighting assembly that matches the original application. Part number 20-9142-80 is listed for 2016-2017 GMC Terrain models and cross-references GMC 84791978 and Partslink GM2502436 for the same application.

TYC Regular is the brand line used for standard replacement lighting components, making this assembly a practical choice when replacing a damaged or non-functioning left headlight on a GMC Terrain. If you are searching for a 2016 GMC Terrain left headlight assembly or a 2017 GMC Terrain halogen headlamp with bulbs included, this part number is the direct fit to review.

Common Problems This Part Can Address

• Cracked or clouded left headlight lens
• Failed low beam, high beam, or park lamp lighting
• Broken front signal or front side marker light function
• Water intrusion or housing damage in the headlamp assembly
• Need for a road-compliant replacement headlight on a GMC Terrain

Installation Notes and Tips

Verify left-side placement before installation and confirm the vehicle is a 2016-2017 GMC Terrain. Compare the connector, mounting points, and bulb layout to the original assembly before removal. Because the bulbs are included, this headlight assembly can simplify the replacement process, but final aiming should be checked after installation to maintain proper forward lighting alignment.

Quality Assurance

This TYC Regular headlight assembly is SAE/DOT compliant and built as a replacement lighting component for the specified GMC Terrain applications. Part number 20-9142-80 is listed with confirmed fitment for 2016-2017 GMC Terrain, left.