why the low coolant light is on???

2002 PONTIAC GRAND AM
185,500 MILES
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TONY237
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I've already changed the thermostat and water pump of my car and recently I' ve already drained the cooling system and add the antifreze and checked the tank of the cooler and it's full, so why the low coolant light is on???
Dec 21, 2011 at 12:59 AM
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HMAC300
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the sensor may be bad. its in the coolant tank.....
Dec 21, 2011 at 1:10 AM
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TONY237
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Ok thank you, but where exactly is located the sensor??
Dec 21, 2011 at 5:51 PM
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TONY237
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Ok thank you but where exactly is located the sensor?
Dec 21, 2011 at 5:54 PM
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HMAC300
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look in the coolant tank........
Dec 21, 2011 at 5:56 PM
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HMAC300
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here is a picture
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Dec 21, 2011 at 5:59 PM
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TONY237
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Ok I got it! thank you
Dec 21, 2011 at 6:14 PM