Vehicle Fitment: Taillights Assembly compatible with 1999-2002 Chevy Silverado 1500/ 1500 HD 丨 1999-2002 Chevy Silverado 2500/ 2500 HD 丨 2001-2003 Chevy Silverado 3500 丨 1999-2006 GMC Sierra 1500/ 1500 HD 丨 1999-2006 GMC Sierra 2500/ 2500 HD 丨 2001-2006 GMC Sierra 3500 丨 2007 GMC Sierra Classic. (NOTE: Not Compatible With Stepside Models) Package Include: 1x Pair Taillights (Bulbs are NOT included) Durable Material: High-quality ABS with a good seal, resist dust and water out on the road. DOT Compliance: Headlights are DOT & SAE compliant to ensure driving safety for you and oncoming driver. Also, the adjusting screw can assist you to adjust the beam level and make it a perfect fit Easy to install: As a fully compatible replacement for factory parts, Our taillights are designed for direct and easy installation with no modification or drilling required. Taillights Assembly compatible with 1999-2002 Chevy Silverado 1500/ 1500 HD 丨 1999-2002 Chevy Silverado 2500/ 2500 HD 丨 2001-2003 Chevy Silverado 3500 丨 1999-2006 GMC Sierra 1500/ 1500 HD 丨 1999-2006 GMC Sierra 2500/ 2500 HD 丨 2001-2006 GMC Sierra 3500 丨 2007 GMC Sierra Classic. (NOTE: Not Compatible With Stepside Models)