Check Engine Light Due to Gas Cap Issue on Cadillac Seville

Illumination of the Check Engine Light may be the result of a loose or worn gas cap.

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Average mileage: 85,000 (85,000–85,000)
9 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002, 2003, 2004
10 people reported this problem
1 person shared problem details
Fiddled with gas cap and, probably will replace.
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