Lighting technology has progressed by leaps and bounds in the last decade or two, and you can benefit fully from these advances with 2014-2018 off-road lighting made to fit your GMC Sierra. Your choices include narrow, powerful spot beams that probe far ahead along the trail; flood beams for recovery, work, or camp setup; hybrid or driving beams that extend forward visibility while lighting up the sides of the trail to reveal hazards such as a deer about to bolt into your path; fog beams, and so on. These lights typically use high output, low power draw LED elements, which have a 50,000 hour service life in many cases and are very resistant to the bumps and vibration of the trail. The aftermarket companies use premium materials and construction for their lights, with die-cast aluminum housings and shatter-resistant polycarbonate lenses commonplace among them.
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