Cadillac DeVille DTS Problem Report

Cadillac DeVille DTS Check Engine Light Due to Gas Cap Issue

(12 reports)

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

Every once in awhile the check engine light has to be cleared due to a gas cap issue. I have not replaced the gas cap. -
Just purchased this car for cheap money.....but it's gorgeous. Haven't put 300 miles on it and now I'm replacing the Torque Converter, & the check gas cap light keeps coming on. Hope I didn't make a big mistake by buying this car ?? The Griz -
change 3 gas caps -
I am told the code refers to filling up gas tank wile engine is running. I have never done that -
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