The TYC 11 5186 91 9 Left Tail Light Assembly is engineered to provide a reliable and precise fit for 2004 2007 GMC Sierra 1500 2500 and 3500 Fleetside Pickup models This assembly is designed to meet or exceed the standards set by the Department of Transportation DOT and the Society of Automotive Engineers SAE ensuring compliance with the Federal Motor Vehicle Safety Standard FMVSS 108 for photometry and safety Constructed with high quality plastic materials the assembly features a red clear and amber lens that enhances visibility and safety on the road The housing is also made of durable plastic offering resistance to various environmental conditions The assembly includes OE comparable fasteners and mounting tabs facilitating a precise fit and hassle free installation without the need for vehicle modifications Rigorous cycling tests have been conducted to ensure the assembly s quality and durability providing long term reliability for fleet operations The TYC 11 5186 91 9 Left Tail Light Assembly is produced in facilities certified under ISO9001 2000 and QS9000 standards reflecting a commitment to precisiond quality ill aspects of the light assembly This assembly is compatible with GMC Sierra 1500 2500 and 3500 Fleetside Pickup models from 2004 to 2007 including the GMC Sierra 1500 HD Classic 2007 GMC Sierra 3500 Classic 2007 GMC Sierra 1500 Classic 2007 GMC Sierra 2500 HD Classic 2007 GMC Sierra 1500 HD 2005 2006 GMC Sierra 3500 2004 2006 GMC Sierra 2500 HD 2004 2006 GMC Sierra 1500 2004 2006 and GMC Sierra 2500 2004 By choosing the TYC 11 5186 91 9 Left Tail Light Assembly fleet operators can ensure that their vehicles maintain optimal visibility and safety standards thereby enhancing operational efficiency and reducing potential downtime due to lighting issues