Cadillac Seville SLS Problem Report

Cadillac Seville SLS Check Engine Light Due to Gas Cap Issue

(13 reports)

A Loose or worn gas cap may cause Check Engine Light to illuminate.

Was getting a check gas cap message ans subsequent check engine light, Applied some Vaseline to the oring on the gas cap works for a short time, but a new cap is needed to fix. -
Check Engine light came on, fuel leak detected, check gas cap came on around a week later, changed and services engine soon turned off. -
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