Thread: 99 Pontiac Gtp Fuel Tank Breather?
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Old 08-05-2008, 06:19 PM
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BNaylor BNaylor is offline
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Re: 99 Pontiac Gtp Fuel Tank Breather?
Welcome to AF.

Any SES/CEL (check engine) light with the gas cap removed or have you tried removing the gas cap yourself and see what it does for sure? Sounds like a evaporative emissions problem related to vacuum.



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