2004 Buick LeSabre Q&A
2004 Buick LeSabre Question: service engine soon light stays on.
car seem to run fine - Visitor
Look here and you'll see there can be hundreds of possibilities for this light to be on: http://repairpal.com/obd-II-code-chart You'll want to get the codes read out and have a diagnosis performed to know why the light is on. - Bret Bodas
Gas Guage Goes Past Full when turn ignition on, Check engine light came on, and stayed on, after about one day, after guage went bad