Q: My service engine light went on 2 days ago. I have a 1999 mer sable with high mileage. Had oil changed 7 days ago what should I do

asked by on December 12, 2017

Had oil changed on car 7 days ago light went on 4 days after
What should I do and why would this happen. Service station said car was fine they checked and all we good!!!!

My car has 11400 miles.
My car has an automatic transmission.

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