Question about 1991 GMC Suburban

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1991 GMC Suburban

My truck has been backfiring and don't pick up speed, like it used to. Do you know what could be causing this to happen?

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  • Greg Bernett
    Greg Bernett May 11, 2010

    Have you done anything to the distributor?

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  • 141 Answers

Distrubtor module , timing off or plugs crack cap or bad rotor bug

Posted on Feb 15, 2009

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