2001 Cadillac DeVille Q&A
2001 Cadillac DeVille Question: MY SERVICE ENGINE SOON LIGHT HAS COME ON, WHAT COULD BE THE PROBLEM?
Could any number of things....but the simplelist thing that could relate to filling up with gas is leaving gas cap off or loose. Check that first. If the cap is loose after gettin it tight it will probaly a few days before the light will go out. - milesauto
go to auto zone and get code scanned for free and post codes - globalhelper