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1991 CADILLAC DeVille Maintenance Light Reset Instructions

1. Turn the ignition to run (one position before starting engine).
2. Press RANGE and FUEL USED simultaneously to display oil life index.
3. Press RANGE and RESET simultaneously until the CHANGE OIL SOON light flashes (hold about 5 seconds).
4. Turn the ignition off and then start the engine to verify the indicator has been reset.

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