The TYC 11 5186 90 1 TY Left Tail Light Assembly is engineered to provide a direct replacement for the original equipment on 2004 2007 GMC Sierra Fleetside Pickup models This assembly ensures seamless integration maintaining the vehicle s aesthetic and functional integrity Constructed with high quality materials it features a durable plastic housing and lens designed to withstand various environmental conditions and deliver consistent performance over time The lens combines red clear and amber colors enhancing visibility and safety on the road The assembly includes halogen bulbs for the tail lamp rear turn signal and back up lamp ensuring bright and efficient illumination Designed for easy installation it utilizes OE comparable fasteners and mounting tabs allowing for a hassle free replacement process without the need for vehicle modifications This tail light assembly meets or exceeds FMVSS 108 standards for photometry and safety compliance providing peace of mind regarding its quality and reliability Additionally it undergoes rigorous cycling tests to ensure long lasting durability making it a dependable choice for fleet operations seeking to maintain vehicle safety and compliance