I have a 2004 GM and after I turn off the engine, about 10 to 15 seconds, it makes a sound like letting the air out of a balloon and making it squeal. I have replaced the radiator cap becasue I thought it might be the pressure. Anyone with other ideas? Thanks,Ron |
It's probably just vaccuum pressure releasing after the engine is shut off. It's not causing any problems is it?
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It does sound like some kind of valve that might be sticking for some type of vacuum. It does not cause any problems yet that I can tell. One dealer told me that when some of the A/C components get older that they can cause noises. Thanks for the information and comments. Ron |
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