{"product_id":"pit66-led-drl-headlights-assembly-for-1999-2007-gmc-sierra-brighter","title":"PIT66 LED DRL Headlights Assembly for 1999-2007 GMC Sierra - Brighter","description":"\u003cp\u003eIn this review the PIT66 LED DRL Headlights Assembly is evaluated for owners of late 1990s to mid-2000s GMC trucks and SUVs. The bottom line: this direct-replacement pair is best for non-Denali Sierra and Yukon owners who want a brighter, more modern look and improved nighttime visibility without modifying the vehicle. The review focuses on fit, build quality, the added LED DRL feature, and durability, and concludes whether it is a practical upgrade for common GMC models.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e Designed to fit many GMC Sierra 1500, 1500HD, 2500, 2500HD, 3500 and Yukon model years, reducing the risk of ordering the wrong assembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLED DRL upgrade:\u003c\/strong\u003e Built-in LED daytime running lights offer a cooler, brighter look and increased visibility during daytime driving.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMicro-prism reflector:\u003c\/strong\u003e The internal reflector and chrome finish increase light reflectivity so oncoming traffic notices you sooner at night.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSturdy sealed housing:\u003c\/strong\u003e Heavy-duty plastic housing with a fully sealed design and one-way vent helps resist weather and reduce moisture buildup for longer life.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect replacement set:\u003c\/strong\u003e Supplied as a complete pair including driver and passenger sides for straightforward replacement without body gap issues when installed correctly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis assembly is aimed at owners of 1999-2007 GMC Sierra 1500 series and 1999-2006 Yukon models (including Yukon XL variants) who want an OEM-style fit with updated LED DRL lighting. It suits people who prefer a plug-and-play replacement that improves brightness and appearance without extensive wiring or fabrication.\u003c\/p\u003e\n\u003cp\u003eIt is not intended for Denali trim vehicles or for non-classic 2007 Sierra models. Professional installation is recommended, so those uncomfortable with headlight alignment or connector work may want to plan for shop installation.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eImproves daytime and nighttime visibility thanks to the added LED DRL and reflective chrome interior.\u003c\/li\u003e\n \u003cli\u003eFull sealed housing and one-way vent design reduce moisture issues and improve durability in wet conditions.\u003c\/li\u003e\n \u003cli\u003eDirect-replacement pair fits a wide range of GMC Sierra and Yukon years and includes both left and right units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eBulbs are not included, so buyers must purchase compatible bulbs separately.\u003c\/li\u003e\n \u003cli\u003eNot compatible with Denali trims and only fits 2007 Classic Sierra models, which limits fitment for some owners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePIT66\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003e1999-2007 GMC Sierra \/ 1999-2006 GMC Yukon (see model notes)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eComplete pair: Driver (Left) and Passenger (Right)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eLighting feature\u003c\/td\u003e\n\u003ctd\u003eLED DRL (Daytime Running Light)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eFully sealed heavy-duty plastic with one-way vent\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eInterior finish\u003c\/td\u003e\n\u003ctd\u003eMicro-prism reflector with fine chrome plating\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eOEM part numbers\u003c\/td\u003e\n\u003ctd\u003e15166756, 15166757, 125104011, 125103011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe PIT66 LED DRL Headlights Assembly is a practical upgrade for compatible GMC Sierra and Yukon owners who want improved brightness and a modern DRL look with a robust sealed housing. It offers good value when matched to the correct model years, but buyers should note bulbs are not included and Denali or non-classic 2007 models are excluded from fitment.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit Denali trims?\u003c\/strong\u003e\u003cbr\u003eThey are not compatible with Denali trims; choose a unit specified for Denali if required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre bulbs included?\u003c\/strong\u003e\u003cbr\u003eBulbs are not included; you will need to purchase compatible bulbs separately before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs installation difficult?\u003c\/strong\u003e\u003cbr\u003eThey are direct replacements and designed to avoid extra gaps, but professional installation is recommended for proper alignment and sealing.\u003c\/p\u003e","brand":"PIT66","offers":[{"title":"Default Title","offer_id":48751340126427,"sku":"B0FH6HC7Z6","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61mBxI7P9qL._AC_SL1000.jpg?v=1778765774","url":"https:\/\/gearmusthave.com\/products\/pit66-led-drl-headlights-assembly-for-1999-2007-gmc-sierra-brighter","provider":"GearMustHave","version":"1.0","type":"link"}