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Introduction |
During normal use, headlights are exposed to UV light, dirt, chemicals, and water vapor, causing their plastic housing to oxidize and deteriorate, making the headlight foggy and potentially reducing visibility by up to 50%. While this guide demonstrates the process of restoring the headlightsheadlight restoration on a 2003 GMC Envoy, these steps will bring any foggy headlights back to like-new conditions. | | | Before beginning, make sure that rain or other precipitation isn't expected in your area for the next couple days, or that you have a well-ventilated garage or covered space to work in; excessive moisture will disrupt the clear coat as it cures. |
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