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 of 1 people found this helpful.

How do I check it?


replace the sensor.

1 of 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 of 1 people found this helpful.
Best Answer Mark helpful

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

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 57 nationwide Grand Prix listings starting at $1,999.

Postal Code:

Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
146 Great Deals out of 1,085 listings starting at $1,995
Used Chevrolet Monte Carlo
15 listings starting at $4,499
Used Pontiac Grand Am
30 listings
Used Ford Mustang
998 listings starting at $3,900
Used Chevrolet Malibu
83 Great Deals out of 1,816 listings starting at $2,495
Used Chevrolet Camaro
966 listings starting at $11,965
Used Jeep Grand Cherokee
130 Great Deals out of 4,037 listings starting at $2,595

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
3 Great Deals out of 21 listings starting at $1,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.