Question about 2002 Pontiac Grand Prix

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Coolant low light on but level is o.k. could there be something else wrong with it.

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The sensor may be bad, or fluid may be low in the reservoir, and a sensor there is asking for fluid.

Posted on Dec 29, 2010

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1 Answer

Why is the low coolant light flashing?


The low coolant light is operated by a level sensor located in the coolant reservoir itself. If the low coolant light is on and the coolant level is full then wither the sensor is unplugged or the sensor is bad.

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the engine light is telling you something has gone wrong and you should stop and check it out. The low speed indicates that the CPU is in low power mode to protect the engine. The low temp reading is suggesting no coolant in the engine. Check oil and coolant level and have a fault code reading done before you cause more damage to the power train

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It says that your vehicle is low on coolant.Get the coolant level checked.If low has to be changed.

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Oct 09, 2012 | 1995 Volkswagen Jetta

1 Answer

The low coolant light is coming on periodically but the car is not overheating. What's wrong


The low coolant light is turned on by a sensor in the coolant reservoir when the fluid drops below a certain level. If your reservoir is full, the sensor may be shorted. Assuming the fluid level is good, try taking the connector off the sensor. If that puts the light out, replace the sensor.

Nov 16, 2010 | 2001 Buick Regal

1 Answer

My low coolant light comes on but their is coolant in the tank,whats wrong counld you tell me?


Is the coolant level in the resivoir up to the cold mark when the engine is cold? if so than the coolant level switch is most likely bad. You will need to remove the coolant tank to replace the switch

Aug 25, 2010 | 2005 Chevrolet Monte Carlo

1 Answer

I have a 2003 Grand Am and a warning light has come on and it's telling me that something is low. Could someone please let me know what is low, so that I can refill whatever needs to be done. Thanks


if it is a funny looking square red image that looks like a radiator, it is your low coolant light. gm's are known for the level sensor failure. so check the fluid level and tap on the side of the coolant jug to see if the light goes out

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2 Answers

Low Coolant light


Sounds like your sensor unit in your coolant overflow tank. Like nearly everything man made that floats, they will eventually leak (become water logged). This is a relatively cheap fix, as long as the light is coming on and the coolant level in the overflow tank is between the MIN and MAX lines in the overflow tank. This means that the float in there is dropping below the actual fluid level (watter logged) and you need to get a replacement sensor unit (aka sending unit) for the overflow tank.

Otherwise, if the coolant level in the overflow tank IS BELOW the MIN level line on the tank, then you are losing coolant somewhere and that is when things start to get expensive (might be a radiator problem, head gasket, cylinder head, heater core, etc).

Jul 19, 2009 | 1997 Pontiac Grand Prix

2 Answers

I have a 1997 buick skylark and my low coolant light is on so i bought a gallon of the local advance autos 50 50 and filled the resevor let the car run 5 min with cap off level stayed the same am i doing...


Are you sure the coolant is still low in the bottle. The coolant sensor thats in the bottle has a float that can stick. If it sticks the low coolant light will stay on even if the coolant level is right. Try tapping on the coolant reservoir bottle in the area where the electrical wire enters it. Not too hard. If that is the porblem the light should reset.

Mar 08, 2009 | 1997 Buick LeSabre

1 Answer

01 mercury sable traction control & low coolant lights stay on.


check for something stuck in the wheels and as for the coolant light get the car running and up to warm temp and start adding coolant to the reserviour bottle until it is up to hot level because there maybe a bubble in the line but also if might be a bad switch in the reservior bottle itself

Jan 11, 2009 | 2001 Mercury Sable

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