Question about 2002 GMC Envoy

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Service Engine light on, car feels likes it's going to stall when stopped, and feels like it's vibrating. 2002 GMC Envoy

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  • dtown6531 Nov 19, 2008

    have a 2002 4WD GMC Envoy SLE that has had several problems in the past three months. I’ll be at a stop light and the RPM jumps up to 1200 then down to 400 then up to 1000 then down to 200 and then it finally stalls. I can be at a stop light and the car will **** forward which causes me to apply more pressure on the brake. Then I notice the RPM jumps up to 900 – 1200 as if the gas pedal is being pushed on. It continues to do this until I turn the ignition off. Sometimes when I coast in traffic and then press on the gas, the car hesitates for a second and sort of jerks forward.

    It's been hard for my mechanic to diagnose the problem as the service engine light doesn't always come on. When it does, I take it to the shop and the mechanics fix the problems associated with the errors. I've had the throttle body cleaned, new air filter, new fuel filter along with a flush of the fuel lines, new spark plugs, as well as a tune-up.

    After all this work, the car ran fine for a few days then all of a sudden the same problems have crept up again. The service engine light came on after the car was restarted due to a stall but then went out by the next morning. I'm tired of taking my car to the shop every week. What can be causing these problems?

  • aciovacco
    aciovacco Jan 12, 2012

    Did you ever get this fixed? If so what was the problem, my 02 envoy does the SAME THING



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Service Engine light on, car feels likes it's going to stall when stopped, and feels like it's vibrating. 2002 GMC yucon denali

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2002 gmc envoy stalls when turning and slowing down

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