unfortunately just bought a 2011 cadillac cts 3.0l and these codes came up, not exactly sure what it is i heard it could be possibly from the purge valve being stuck open but im not sure. Gonna test that in the morning but some other suggestions on what it could be would be amazing

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2 points connella08

I have seen a bad evap purge valve cause these codes together. When you fill up at the gas station, does it take longer to start when you pull away from the pump?

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1 points Koochie_King

haven’t been able to fully drive her due to some legal stuff but i did notice it took her a few seconds to start morning after i bought it

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1 points olimsamoth

Doubling up on most likely purge valve stuck open. If purge valve is okay, then likely two separate issues.

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1 points MaceMan2091

check MAF and make sure it’s OEM. Could also be fuel pump. Best case scenario it’s something easy.

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