Why is my low coolant light on?

Asked by Feb 20, 2017 at 08:08 PM about the 1999 Pontiac Grand Prix 2 Dr GTP Supercharged Coupe

Question type: Maintenance & Repair

My low coolant light is on and
won't go off. The car isn't
running hot. It still has power.
The reservoir has water in it
and so does the radiator.

7 Answers


The low coolant sensor is possibly bad.

1 people found this helpful.

How do I check it?


replace the sensor.

1 people found this helpful.

Maybe air in the cooling system.


nope no air, if the water is on its level it will not light up. change the sensor


that sensor is a weekly thing on most vehicles here in South Africa, i do change a lot of them

1 people found this helpful.
Best Answer Mark helpful

Thanks guys! I'll let you know if that helps!

Your Answer:

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