What is your question?
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What is your question?
Giving code P0442. Already change out gas cap. I was told by the dealership its the fuel filler pipe.
What makes this problem better or worse?
Nothing
How long has your 2015 Chevrolet Impala had this problem?
One month
There are other possible causes for this failure of course - however it’s difficult to determine WHY it occurred without *hands-on* inspection / evaluation. Perhaps the “dealerships” personnel will shed some light on it for you. https://www.engine-codes.com/p0442_chevrolet.html