Hornet_2497 answered 6 years ago
Look and see if your radiator cooling fans are coming on when it's reached full temperature. They should also come on with the A/C and Defrost functions.
Also, have the coolant temp sensor checked for proper operation.
I just got a 2005 Grand Prix and the temperature gauge was going over half and a lot to red. I changed the radiator and thermostat. It is still doing it any suggestions?
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Maintenance & Repair
my 1999 grand prix, temperature gauge goes all the way to hot when the car is first turned and stays there until the key is turned off
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