Question about 2005 GMC Envoy Xl

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This could be as easy as a tune up. Check the inside of the throttle body for dirt build up. Spray throttle body cleaner into the throttle body and you'll see alot of black dirt come out of it. Continue spraying until the cleaner looks fairly clean. What could be happening is the dirt is clogging the small gap that has to be at the throttle plate when the plate is closed. The small gap is to allow air to enter the engine to keep it running at idle.

Posted on Oct 15, 2008

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My 03 e500 shut down when my heater is on at a stop light

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Hello Scott,

Thanks So Much, for contacting me. I believe,, based on your symptoms, that you have a bad 02 sensor relating to your emissions, which is happening by your Cadillac convertor. I would have auto zone or place like that in your home town confirm this. They can check with there hand help diagnostic computer to check to make sure it is the one i feel is out. Once they have, it will cost about 80 bucks and problem solved. Engine light will be off and of course car will not stall at stop lights anymore. Based on the year of car, i think that is your problem. If you feel that this makes sense and you can trust I am accurate on the problem, please rate my solution as well as some kind words always appreciated. If you need additional questions, feel free to contact me anytime. I also give a 100% money back guarantee on my solution. Thanks So Much, Mike

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