2003-2006 GMC Sierra LED Fog Light Bulbs: Looking for upgraded LED Fog Light Bulbs from a reputable brand and value the fact that we've actually tested them on your truck? Our TRS Tested kits include all the right components to ensure perfect fit, function, and performance from the upgrade. At The Retrofit Source, we do 2003-2006 GMC Sierra LED lighting upgrades better!

SOLD AS A PAIR OF BULBS (this price gets you 2 LED bulbs).

Cutting-Edge LED Chip Technology: We challenge you to find another bulb on the market that produces as much light as the S-V.4 while still retaining a perfect beam pattern! The S-V.4 LED headlight bulbs utilize the newest multi-core LED chip styles that feature one long crystal over the entire diode array to create a seamless light output source. Most LED headlight bulbs on the market essentially create 2, 3, 4, or 6 different light sources by stacking 2-6 different chips together in a line. The NLW1860CV2 chips are based on XD14 technology developed by CREE, this custom designed LED chip has no light gap between diodes which gives it a closer function compared to the original filament bulb, thus achieving a greater beam accuracy that works best in any headlight or fog light housing.

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