Code PO449
03gmc
01-27-2005, 09:20 AM
Hi my van is 99 montana and the code reads PO449. What is this and how can i fix it?
Thanks
Thanks
TorinoGT69
01-27-2005, 10:02 AM
That code refers to a problem with the EVAP vent valve, could be a bad valve, bad wiring, or a pcm problem.
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