Question about 2005 Chevrolet Uplander

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2005 uplander,when the van is runing the head lights flicker

When the van is runing the head lights and instrument cluster lights dim and brighten (flicker)had the charging system and battery checked out all seems to be fine , very annoying problem!!!

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If voltage regulator is good, then the dimmer switch is probably bad.

Posted on Sep 04, 2009

  • doublez2002
    doublez2002 Feb 21, 2012

    It is a common problem, Alternator needs to be replaced. It may be charging at 14.4 but the regulator is bad. I had the same issue and it nearly drove me crazy. Alternator replacement fixed the issue.

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