cause of coolant hot light coming on

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

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?

2 Answers
188,365

Paul answered 8 years ago

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.

8 people found this helpful.
Mark helpful

Guru997SZM answered 3 years ago

66 impala hot light came on why is that just this evening hasn't happened till about an hour ago why all of a sudden?

Mark helpful

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