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Master
4,669 Answers
- Posted on Dec 02, 2010
Re: Getting an error code of PO449 for a check engine...
You are right. You need the vent valve not the purge valve. The vent valve is a dealer item. Also this is a common problem and GM has released a bulletin on this that involves moving the location of the valve and running some new lines. It comes as a kit from GM, and it costs about a 100 bucks.
purge valve venting at idle
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