Compatibility: Compatible with 1999-2007 GMC Sierra 1500/2001-2007 Sierra 1500 HD; Fit for 1999-2004 GMC Sierra 2500/2001-2007 Sierra 2500 HD; Fit for 2001-2007 GMC Sierra 3500; Fit for 1999-2006 GMC Yukon; Fit for 2000-2006 GMC Yukon XL 1500/Yukon XL 2500; Fit for 2001 GMC Sierra C3; NOT Fit Denali Trims; For 2007, Fit Classic Models ONLY High Brightness: Higher luminous efficiency and lower power consumption can release more luminous flux. It provides better field of view and visibility compared to other headlights, with longer and wider lighting distances Safety Reflector: Makes the oncoming cars or passersby quickly notice you at night, ensuring your driving safety and others Sturdy Sealing Structure: The fully sealed heavy-duty housing is made of high:quality plastic,to ensure excellent weather resistance, impact resistance, and durability Direct Replacement: Professional Installation would be highly recommended. No extra gaps after easy installation. Comes with a complete set of headlights, including Driver (Left) & Passenger (Right) sides PIT66 LED DRL BAR Headlights, Compatible with 1999-2006 GMC Sierra /1999-2006 GMC Yukon, Smoky Lens Black Housing Clear Reflector