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Hello, I have a 97 Sunfire GT and had the same problem. The cap on the overflow bottle is pressurized and mine lost it's pressure. Once I replaced that I didn't have the problem anymore. !

You could also have a hole or crack in the overflow container

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โˆ™ 2015-07-17 17:39:30
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Q: Why would a 2000 Sunfire pour antifreeze out from under the over flow?
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