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Engine light

(1999 GMC Sonoma)
in McKeesport, PA on January 29, 2011
engin light is on. engine runs rough at idle, auto zone can not read the computer, why cant they get any info from it
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Popular Answer
of Joels Auto Service on January 30, 2011
check the cigarette lighter fuse,its integrated with your diagnostic link connecter.if its blown it wont communicate with a scan tool.
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