Question about 1999 Chevrolet Astro

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Hvac doors not working

99 chevy astro van hvac doors not opening or closing (no vacuum at all) checked all vacuum lines, they seem fine. also it had a clicking sound last month under the dashboard where all the doors are, any suggestions? could it be related to the pcv valve since is connected to the lines?

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  • jtron Dec 07, 2008

    99 chevy
    astro van hvac doors not opening or closing (no vacuum at all) checked
    all vacuum lines, they seem fine. any suggestions?
    could it be related to the pcv valve since is connected to the lines?



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Its probably the vaccum line. Check again. There is a small thin one that crosses over the top of the engine and fails/leakes/cracks in the area where it is hard to see. Repalcing the vaccum lines for $10 is the place to start. Then see what happens. While the engine cover is off, go ahead and change the PCV valve and give the engine a quick check for any other loose connections or issues.

Posted on Dec 28, 2008


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