2004 Buick LeSabre Q&A

2004 Buick LeSabre Question: Warning light says: Service Engine Soon - Gas Cap loose - check cap

No corrosion on filler tube Replaced Gas cap light always on No fuel smell -
Answer 1
Sometimes it will take awhile for the code to clear and the light to turn off, if you indeed fixed the problem. You may not have fixed the problem, and it may be something else in the emission control system. I'd recommend a professional diagnosis--if all is well, they can clear the trouble code at the shop and turn off the light. -