Question about 2004 GMC Sierra Denali

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2004 GMC Yukon Denali XL - left side Headlamp issue

Both hi and lo beams on the left side do not illuminate when the vehicle starts or when I manually turn the knob on the dash to either position. If I use the turn signal to 'flash' the Hi beam, then the left side works. I know this is not an issue with the lamps themselves as I've swapped them out with the right side and they are fine. The right side is fine (both hi and lo beams). I checked the fuses and they are also fine. Any help is appreciated!

Thanks. Matt, Illinois

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Plug may not be completely installed? wire the low and high to each other.

Posted on Jan 25, 2009

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