This is an ongoing problem . There may be more future failures as the GT ages. I think it would be helpful to have a list of the symptoms, codes and resolutions in one section.
when is someone going to come up with a solution for the mickey mouse flapper valve that causes problems for so many gt owners ? can we replace it with a plug. gt guys say that the replacement is the same original part that many owners have replaced numerous times. we need a fix.
I sadly am in CA, any non-OEM fix will have to be CARB approved or it would fail the smog inspection. Going forward the filler will be a PITA. I had to replace one with under 6k miles! The flapper broke "clean off."