Question about 2003 GMC Envoy

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Abnormal idle Hi I need help with my car, everytime I refuel my car and then run a few blocks the idle change and go up to 900rpm, so I need to stop and turn off the engine to keep the idle back to its normal state, because if I keep on running the "service engine soon" light will come on, or if i run and then stop and keep the the car in idle for about 10 minutes and run again a few blocks it cause the same problem, please help me.

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Cahnge ur fuel cap it pressurezes the fuel system when the cap fails it can cause this

Posted on Jun 26, 2008

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