Question about 2005 GMC Envoy Xl

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  • bob c May 21, 2011

    Engine or dash?

  • forleaserleo May 21, 2011



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Quick and easy way is while the vehicle is running get a can of carburator spray and start to spray in areas where there are vacuum lines or places for vacuum leaks like the intake manifold. If the idle changes in a area when you are sprying it, you will know the vacuum leak is in that area and you can narrow it down from there. I have special tools for this but use them on a regular basis so i need them and they do cost. I hope this helps you and good luck.

Posted on May 21, 2011

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Please rate solution - Thanks.

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