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GMC Master
510 Answers
- Posted on Jun 29, 2011
Re: 2006 gmc envoy loses power with a/c on
{: ) I presume that your a/c compressor is not seized in any degree, for you can hear squeaking noise from belt when a/c on. I suggest you check the throtlle body for carbon build-up. Clean it with carburetor cleaner and afterwards perform an idle reset. You may clean the air filter as well.
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