Question about 2000 GMC Jimmy

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Headlights and interior lights flicker

I have a 2000 GMC Jimmy 4.3. When it is dark enough for all lights to come on automatically the interior lights and dash lights and headlights flicker(dim then normal). The voltage gauge doesn't seem to show any fluctuation. Any help?

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  • Anonymous Dec 18, 2008

    Same here. Just noticed it today. I either didn't notice until now, or it just started. Same car and year as well.

  • jshermie May 11, 2010


    Can you help me out with what line this is connected to the alternator? I have the same problem with a 98 blazer....



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We had the same problem there is a small line that connects itno the alternator, it kept jiggling loose. we found a way to tighten it and the problem went away

Posted on Jan 03, 2009


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Needs headlight

I have a 98 GMC with the same problem. I already spent 900 on one headlight and now the other one is out. there is no way out unless you convert the headlight system which is about 800 for both lights. which has to be done at the dealer.

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