Question about GMC Envoy

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I have a 2002 GMC Envoy, recently the service engine light will blink, usually when accelerating, when I let off of gas it stops. I took it to a mechanic and the computer said that nothing was wrong. They told me that it might have something in the fuel lines or bad gas and it processed it through. I changed the fuel filter and put in fuel injector cleaner, but it still does it. Sometimes it will run fine and others will I start it up it will have a rough vibrating feel. It will also hesitate when I am at a complete stop and take off. Any ideas?

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Blinking service light indicate multiple active faults on the same circuit it could be several things anything from the throtle position sensor to a v.v.t. code if it is a 4.2 liter take it to a dealer or a better qualified mecanic who understands the problems accocited with this engine

Posted on May 11, 2010

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2 Answers

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