Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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If you still need help here is a cluster from a 03 impala. There are two lamps right of the message center. The one to the top is for the ABS system. The one that looks like an engine with check written under it is the service engine soon lamp. If this is the lamp that is coming on, and the engine has no diveability concerns, they should be able to drive it , but should get it in and checked As soon as they can. It could be as simple as a loose gas cap.
Please ask your friend if the light looks like the one in the picture.