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To clear diagnostic trouble codes (DTCs) on a 2001 Cadillac DeVille, you can use an OBD-II scanner to read and erase the codes. Connect the scanner to the OBD-II port, usually located under the dashboard near the driver's seat, and follow the prompts to clear the codes. Alternatively, you can disconnect the negative battery terminal for about 15 minutes to reset the system, but this method may also reset other settings. Always ensure you've addressed any underlying issues before clearing the codes.

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1mo ago

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