Check Engine Light Due to Gas Cap Issue on Buick Park Avenue

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

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Average mileage: 90,000 (90,000–90,000)
2 model years affected: 1996, 2004
4 people reported this problem
1 person shared problem details
check eng. light came on. cleaned rust off of fill pipe cleand cap reset light no prob
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