Question about 2003 Cadillac CTS

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When the ac is on car vibrates

03 Cadillac CTS with car idlling and i turn on the ac, car vibrates. turn off ac it is fine.the rpms do not pickup any when the ac is turned on.

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  • Luke Smith
    Luke Smith Dec 30, 2016

    I'm sorry to hear that your car vibrates when the ac is on in your cadillac. I feel like the ac in a car is a little bit different to work with than other parts of the engine. I would imagine that looking up a service who specializes in automotive ac would be a good ide a.



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Something is not telling the computer to step up idle and is probably an ac pressure sensor. A scan tool will give you that info.

Posted on Jun 17, 2009


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