The TYC Genera 18-5034-01 Left Upper Side Marker Light Assembly is engineered to provide a precise fit for GMC C/K 1500, 2500, 3500, and Yukon models from 1994 to 1999. This assembly features a durable plastic lens and housing, ensuring longevity and resistance to wear. Designed for vehicles equipped with composite headlamps, it offers a snap-in attachment method for straightforward installation. The amber lens color enhances visibility, contributing to overall road safety. By choosing this replacement assembly, fleet operators can maintain vehicle lighting systems to OEM specifications, ensuring compliance with safety standards and minimizing downtime due to lighting issues.