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Low coolant light is flashing - 2002 GMC Sierra

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Make sure sensor is plugged in and radiator is full

Posted on Mar 20, 2014

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I just changed the water pump, replaced the coolant, no leaks and now my low coolant light keeps flashing it's not low is this normal?


Low coolant light came on--Holy ****! - 1999-2006 & 2007-2013 ...

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Apr 22, 2006 - 13 posts - ‎10 authors I was driving down the freeway today and got a "low coolant" message. As you can ...Bob 2000 Ext cab Silverado 4x4 w/ 5.3. Back to top ... 2002 Silverado Battery light and low voltage on gauge ...
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Sep 12, 2015 | 2000 GMC Sierra

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.

Aug 23, 2014 | Cars & Trucks

1 Answer

1999 VW Cabrio dash light


Obviously it's temperature gauge light. Check for coolant level first. Then check for coolant leak. If coolant is leaking out of your car, the lower coolant levels in your engine will cause it to overheat. If you have your heater on and it starts blowing hot air instead of cool, your engine is low on coolant. This will cause to flash a warning light on your car's dashboard.

Jun 10, 2013 | Cars & Trucks

1 Answer

My low coolant light flashes


Check for low coolant in resavoir if coolant is not low then replace the coolant level sensor.

Sep 01, 2012 | 1999 Pontiac Montana

3 Answers

'low coolant light' flashes all the time and then 'service engine soon'


These problems may or may not be related. The Check coolant light means that the coolant level in your radiator is low. If you have checked it and it is not low, then the sensor is most likely defective. The low coolant sensor will not turn the Check Engine light on - even if the coolant really is low. There are many things that can cause the Check Engine light to come on. You will have to scan your Engine Computer to find out why it has been turning the light on.

I did have a problem on one of these cars one time where the Check Engine light was coming on and there were several codes for the Throttle Position Sensor(TPS) and the Manifold Absolute Pressure (MAP) sensor and the car ran really bad. The Check Coolant light was also on. After checking it out I found that the coolant level sensor was shorting out the 5 volt reference circuit (VREF) from the computer and causing the whole problem. Replacing the coolant level sensor fixed the car.

Mar 06, 2011 | 1995 Chevrolet Lumina

1 Answer

Blue coolant light comes back on and flashes? why


The light should be for a low level sensor in your coolant reservoir. Check your coolant level (when vehicle is cold), if fluid level is ok then the sensor is probably the culprit.

Mar 09, 2010 | 2002 Volkswagen Beetle Turbo S

2 Answers

Temp light


well blue is OK when thermostat opens it should go off this means the car is at operating temp as long you do not have orange or red temp light should be OK hope this helps

Sep 18, 2009 | 2000 Volkswagen Beetle

1 Answer

A warnig light that looks like a thermometor with waves at the base? What is this. It beeped once ad now just flashes


Coolant light...
Low coolant in reservoir tank.... coolant leak... low coolant pressure....

Sep 04, 2009 | 2007 Volkswagen Golf

2 Answers

Low coolant light keeps flashing


Replace the coolant level sensor.

Sep 09, 2008 | 2000 Buick Regal

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