2000 2001 2002 2003 2004 2005 2006 GMC DENALI/YUKON BUMPER LIGHT BLACK All lighting products are sold as "Pairs" (left and right) unless noted otherwise or not applicable i.e. Third Brake Light which is sold as 1 All products are S.A.E. (Society Automotive Engineers) and D.O.T. (Department of Transportation) compliant to FMVSS no. 108 (Federal Motor Vehicle Safety Standards); and manufactured in a state-of-the-art ISO 9002 and QS 9000 quality certified factory. Some of the lighting products include light bulbs, for products which do not come with any light bulbs, you can apply the stock light bulbs for installation All wiring for lights are pre-assembled for essential plug and play application when possible, some wires may require splice connection to existing wiring. Professional Installation Highly Recommended