Check Engine Light Due to Gas Cap Issue on Saturn SC1

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

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Average mileage: 126,666 (71,000–189,000)
7 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002
15 people reported this problem
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problem details
2002 Saturn SC1 117,000 mi,
Check engine soon light came on after an oil change
have not found a solution yet. Just sporadically makes the "check engine" light turn on, then it eventually turns off weeks or days later.
2001 Saturn SC1 117,000 mi,
Check engine soon light came on. Mechanic checked the computer code and identified leaky gas cap. Going to replace cap.
2002 Saturn SC1 126,000 mi,
After just about every fill up, the light will come on. I re-seat the cap, light goes off within a few more starts.