INFORMATION LIGHT READS GAS CAP PUT NEW GAS CAP LIGHT DOES NOT GO OFF on 1999 Cadillac DeVille

COULD IT BE RUBBER VENT HOSE

Asked by for the 1999 Cadillac DeVille
1 answer 1 comment
It may have a small leak in the evaporative emission system. It could be about a dozen different things. Have a professional diagnosis done.
problem was solved it was the gas filler neck that was leaking fumes detected by puting smoke in the system