Buick Century Problem Report

Buick Century Check Engine Light Due to Gas Cap Issue

(4 reports)

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

check engine light came on. Mechanic checked code, cleared it and suggested we tighten gas cap to at least three "clicks". Three months later problem has not returned -
check engine light came on and stayed on code said vacume leak I replaced gas cap with new one and cleared code and light never came on again. -
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