【Perfect Fit & Direct Replacement】 The 3rd Brake Light Compatible with 1999-2006 Chevrolet Silverado/GMC Sierra (1500/2500/3500/HD models) 【Waterproof Design】 ABS housing + high-density foam gasket creates triple-layer sealing against rain, snow, and mud. Engineered to withstand extreme weather, eliminating leaks common in outdated factory lights. 【Features】 high-intensity LED chips deliver crisp 360° visibility,brighter than dim halogens. Enhances rear collision prevention in fog/rain while adding a modern sleek look 【3-Minute Tool-Free Install】 True plug-and-play design — no wiring, drilling, or cutting required. Includes step-by-step guide for DIY success (even first-time installers can finish faster) 【Cargo Light Function】 Smoked lens; Gasket included. RUNBAITOO LED 3rd Brake Light Assembly is designed for 1999-2006 Chevy Silverado & GMC Sierra 1500/2500/3500 HD, featuring a sleek smoke-tinted lens for enhanced aesthetics and reduced glare. Built with durable polycarbonate housing and IP67-rated waterproof construction, it withstands harsh weather while ensuring longevity. Equipped with ultra-bright LED beads for superior visibility and safety, this high-mount stop lamp offers plug-and-play installation for effortless replacement. The integrated rear cargo light adds practicality for nighttime use. Key specs include impact-resistant materials, OEM compatibility, and a 50,000+ hour LED lifespan. RUNBAITOO guarantees precision fitment, durability, and a safety-focused upgrade for your vehicle.