Engine service light on.

Asked by Guru93F Mar 16, 2017 at 05:12 PM about the 2000 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

Auto Zone aside it had coolant level or thermostat problems. It heats fine,has
no coolant leaks an tank is at  normal levels What could it be?

2 Answers

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Maybe the coolant level sensor is not functioning properly and thinks you are low even though you are not.

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