Engine service light on.

Asked by 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


So what was the code or codes that came up when they scanned the vehicle?


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

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