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Pushing the "OFF" button, and the "WARM" buttons TOGETHER, will read the codes. Pushing the "OFF" and "HI" buttons TOGETHER to clear codes. Assumingthe cause of the light initially to come on, was corrected, the light should go off. Good luck

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15y ago
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Q: How do you reset or turn off Service Engine Soon indicator on a 2003 Cadillac DeVille?
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