The factory lighting on your GM 2500HD/3500HD often falls short, especially on dark rural roads or nighttime trail adventures. Upgrade your truck’s lighting with our wide selection of options to get the brightness you need while adding a modern touch to your setup. From powerful LED headlights and taillights to fog lights and off-road lighting, we have everything you need to light up the night! Pair your upgraded lighting with our selection of rugged and stylish Exterior Upgrades. GM Duramax Fitments: 2006, 2007 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.