Replace the burned out Bulbs in your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax. Swap out the dim fog light, headlight, tail light, and corner marker bulbs for brighter units. LED headlight bulb conversions, Xenon, and replacement LED bulbs are available. Anzo, Recon, Oracle, Rigid Industries, Dorman, and Putco are just some of the high-quality brands you can find at XDP!