possible cause of codes p0455 on my 2006 chevrolet tahoe on 2006 Chevrolet Tahoe

the light came on lase week i did scan and it was diagnostic code po455. what i did is buy a new gas cap and deleted the codes.after a week light came back

by in Brooklyn, MD on May 25, 2013
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1 answer
ANSWER by , May 26, 2013
possible leak air leaking into the tank