Tech discussions on the 3.6L V6 motor (LFX) used in the 2012 & up Caprice.
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Post by sardillim » Thu Jul 20, 2017 1:58 am

Getting this code, it appears that it is on cold start up only. My guess is that the evap leak fixes itself when things warm up which makes if difficult to find any type of leak. Anybody have this code pop up ? if so what was the fix ?


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Location: Azusa,CA

Re: PO496

Post by smwalker » Thu Jul 20, 2017 2:42 am

May want to search the G8 boards. I know the V8 guys have had a consistent issue with the purge valve. Not sure what the V6 guys have been experiencing. Just more history there.

If you want any of the diagnostic steps let me know I can post the flow chart if you got a multi-meter.
Steve Walker
Azusa, CA
'11 PPV 9C3 Huron White

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