cause of coolant hot light coming on


Asked by Dec 02, 2015 at 03:43 AM about the 2004 Chevrolet Impala LS

Question type: Maintenance & Repair

Hot coolant light comes on at times but there are no signs of a problem and
the gauge continues to read normal.  What would cause the light to come on?

1 Answer


Your cooling fan, your cooling fan sensor could be sporadically not working. Your thermostat could be getting stuck in the closed position from time to time. I would flush the system change the thermostat and radiator cap.

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