COULD IT BE RUBBER VENT HOSE
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1999 Cadillac DeVille Question: INFORMATION LIGHT READS GAS CAP PUT NEW GAS CAP LIGHT DOES NOT GO OFF
Answer #1Chevy Power August 16, 2012, 12:54Journeyman
It may have a small leak in the evaporative emission system. It could be about a dozen different things. Have a professional diagnosis done.
Replyzimmi, August 17, 2012, 16:33Rookie
problem was solved it was the gas filler neck that was leaking fumes detected by puting smoke in the system