P0453 Cadillac -

Question

When I pump gas the fuel comes back up the line and back out spilling on the floor. I checked the fuel line and it wasn't pinched so not sure what else could be causing the issue.

Answer 1

Hi there,

When you have this issue it's typically a problem with the vent control valve. If it sticks closed, then the fuel vapor has no place to go, this will make the fuel come back up the fill tube and shut the pump off.