Check Engine Light Due to Gas Cap Issue on Buick Century

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

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Average mileage: 69,772 (41,000–98,544)
1 model year affected: 1997
3 people reported this problem
2 people shared problem details
2003 Buick Century code P0442. Evap system (small leak). Bought replacement fuel cap from GM (I read that it must be from GM). No "service engine light" after 50 miles.
3 people like thisFlag inappropiate
1997 Buick Century41,000
Replaced worn gas cap.
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