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Is this hole supposed to be here?

1585 Views 9 Replies 10 Participants Last post by  tumbleweed
I'm asking because I replaced my old fuel cap and I'm still getting a P0455 code.


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My truck has that hole and it doesn't have a CEL or a gas cap tether. My guess is that it's a drain hole to let water and spilled dirty gas to drain out so it doesn't make its way into the filler tube.
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