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1999 Pontiac Grand Prix COOLANT LEVEL LIGHT

Tiny
-CAGEORGE
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 288,000 MILES
COOLANT LEVEL LIGHT STAYS ON UNTILL ENGINE WARM UP
Sunday, April 4th, 2010 AT 10:32 PM

2 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Is coolant level full? If OK then probably faulty coolant level switch/sensor
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Sunday, April 4th, 2010 AT 10:35 PM
Tiny
SMAX23
  • MEMBER
  • 12 POSTS
It's the sensor. Been there done that. You'll have to drain the radiator down below the sensor level and then change it. You can possible clean it. Mine was gunked up with the orange coolant, which I went to green. Don't care what GM says, the orange is not good for your motor. Inside the sensor is a pin. You can clean it, if you don't want to buy a new one. New one is around $45. Good luck :)
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Monday, April 5th, 2010 AT 1:12 AM

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