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My 96 chevy lumina is showing the low coolant light. I have filled up both the radiator and the reservoir tanks. What should I look for as a possible issue?

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If you don't have a coolant leak, try replacing the Coolant Sensor itself, may be bad.

Posted on Nov 19, 2013

  • Lydell Moore Nov 20, 2013

    Thanks ismael. Would you possibly know the price to do that

  • Ismael Nov 20, 2013

    The part itself cost about $50, its called Radiator Coolant Level Sensor, not sure about labor cost where you live, but I would guess around $50 to $75 to replace. Good Luck.

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SOURCE: Coolant fill procedure

NEVER open the radiator when the car (or any other engine) is running!! The radiator is part of the pressurized cooling system (under that cap is coolant at 15psi)

Correct way to check the coolant in the radiator, is wait until the engine is COLD, then remove the radiator cap and re-fill.

Posted on Aug 30, 2008

  • 85 Answers

SOURCE: coolant in coolant reservoir did not fill low level in radiator

you must drain air out of system
so when engine is warmed up, just unscrew slightly the thermo time switch which is the highest sensor and unit in cooling system besides the reservoir, until alittle air releases then when antifreeze starts coming out then retighten to specs. BE VERY CAREFUL !!!! LOOSEN VERY SLOWLY AND NOT COMPLETELY REMOVE FOR THIS CAN CAUSE BURNS. MIGHT WANT TO USE A RAG AROUND SENSOR. If this doesnt solve it then make sure you have the correct rad. cap. Also that the filling hose is not clogged as well as the little port on radiator.

Posted on Feb 19, 2009

  • 255 Answers

SOURCE: My coolant light on my 96 chevy cavalier came on.

have the cooling system checked with a pressure test. to see if it will hold, if not you know you have a leak to find

Posted on Apr 12, 2009

Sergey2121
  • 46 Answers

SOURCE: radiator coolant or reservoir tank always full

Relax, there is no problem.

When the water / coolant gets hot (inside of radiator/engine) it starts to boil, ofcourse when it boils, it expands, so the fluid in the radiator has to go somewhere, thats why there is the overflow reservoir. So, when the fluid boils, some moves to the reservoir to avoid any potential problems with the radiator, such as it blowing up, or not being able to cool off all of the fluid running through the engine.

But relax, its normal.

Posted on Jul 13, 2009

  • 574 Answers

SOURCE: Low coolant warning light stays on.

Bad coolant level sensor in the tank. Look around the bottom of the reservoir and find a plug connection, unplug it and see if the light goes out. I think the tank has to be replaced dont think you get the sensor out. You could try by take the tank off and see if it will come out of tank but I dont think it will.

Posted on Sep 03, 2009

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1 Answer

How to I get the, "low coolant", light to turn off on my 2001 Chevy lumina


have the coolant sensor checked and check the wire to it
they work by having a continuous power supply through the sensor through the coolant to earth to keep the light off
any break in that wire of sensor results as a low coolant because the power can no longer earth out and so the light comes on

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Why is my1997 chevy lumina low coolant light is on and the radiator is full of coolant ?


In most newer chevys, the coolant reservoir is part of the pressurized system. Rather than just holding overflow coolant and relying on the radiator pressure cap to draw from and expel to the reservoir, it is an active part of the cooling system. On these systems, there is a coolant level switch in the reservoir. This will activate if the level in the reservoir gets below a certain point. So it is possible to have a full radiator and still get a low coolant light. Be advised that as the reservoir ages and get stained, it is not uncommon for the low coolant sensor to give false indications of low coolant.

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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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1 Answer

1999 Chevy lumina coolant light comes on but radiator and reservoir is full


If the warning light is coming on and the radiator is full, the sensor could be failing.
You would need to check the level in the radiator not just the overflow tank.
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1 Answer

Low coolant light flashing


most cars and trucks have a censor on radiator or fill tank,ck the coolant level and if it is full then censor should turn lights off if it is low fill with water to full line and light should turn off

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1 Answer

After I added coolant to 91 chevy lumina the low coolant light will not go of I wonder why


When filling the coolant system you need to have the car running with radiator cap off and you can also burp the coolant hose while filling the system to remove any air. The system may be full for a while until thermostat opens and sucks the coolant out of radiator which is the perfect time to add more to top it off.

Disconnecting your negative battery cable for 10 minutes will reset the computer and shut off the light.

May 16, 2011 | 1991 Chevrolet Lumina

2 Answers

My Chevy Venture 1999 when I drived the temperature was normally, but when I stay the temperature was hot. I changed the termosthator but the problem is continually.


Check the coolant reservoir and the radiator for proper coolant level. If low you probably have a leaking intake gasket or possibly a head gasket leak. The intake leak will be visible on either end of the intake manifold, located at the very top portion of the engine. The head gasket usually shows up at the rear head, nearest the belt. You could have a water pump leaking and this would show coolant on the ground under the right front of the engine, more so when the engine is running. They are very common for all 3 problems.

Mar 02, 2011 | 1999 Chevrolet Venture

1 Answer

Low coolant light is on but does not overheat and has plenty of coolant in radiator and reservoir


Those sensors are bad all the time. It is the sensor on the radiator tank. They have fingers on them that trap air bubbles. You can try tapping on it, but that usually breaks it anyways. The fix is to change the coolant level sensor.

Anyways if that helps you any little bit, then feel free to follow me on Twitter. That one is at: twitter.com/acoates23234

Thanks for the vote, and good luck!

May 15, 2010 | 1994 Chevrolet Lumina

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