The TYC 20-9142-90 Left Driver Side Headlight Assembly is engineered to provide reliable and efficient lighting solutions for the 2016-2017 GMC Terrain. Designed to meet or exceed FMVSS 108 standards, this headlight assembly ensures compliance with DOT/SAE regulations, offering dependable performance and safety on the road. Constructed with durable plastic housing and clear and amber lenses, it is built to withstand various driving conditions, providing long-lasting illumination. The assembly includes halogen bulbs for high beam, low beam, front signal light, front side marker light, and park lamp, ensuring all necessary lighting functions are covered. The lens features a special coating that prevents hazing and fading, maintaining optimal visibility over time. With OE-comparable fasteners and mounting tabs, installation is straightforward, allowing for a precise fit without the need for vehicle modifications. This headlight assembly is a cost-effective alternative to original equipment, offering OEM-level quality and performance. Whether replacing a damaged headlight or upgrading for enhanced visibility, the TYC 20-9142-90 Left Driver Side Headlight Assembly is a reliable choice for fleet operations seeking to maintain vehicle safety and performance.