Check engine light
The check engine light on my 2003 Saturn L300 is on and won't go off. There
doesn't seem to be any problems and the car runs great. What could my
problem be. The dealer where I take it seems to be guessing and costing a lot
of money with no fix. It's a Toyota dealership
Agree with the parts store suggestion. Alternatively, go to a GM dealer (Chevrolet, Buick) as Saturn was a GM vehicle.