Today was in the 20s today and my car sat while I was at work all day. When I came out and started the car, it said it had low coolant. After running for around a minute and warming up, it went away.

Has anyone else had this?

The car only has 7000 miles on it.

 

I had that all of last winter. So far so good this year, maybe my stg 2 reflash got rid of it

 

That makes me feel better, Thanks

 

as stupid as it sounds, just fill it with a little more coolant, because commonly there an airbubble or whatever that burps back up into the system, i have done it before and havent had a problem since, and i had the same problem and only when it was cold as well.
stupid ass dealership tried to blame it on my K&N intake pushing the overflow bottle sideways and throwing off the sensor, but its BS, so just add more

 

I have the same problem, but mine continues to come on occasionally while driving. I took it to the dealership, I have a cracked coolant tank, so its getting replaced under warranty.

 

Thanks I will add a some.

 

My 07 ss/sc jsut did that a few days ago. i checked the coolant and it was where it supposed to be. Temp. outside was only 30 degrees. It has done it since though.

 

Mine did it once, only for a second though. It was very cold outside. Apparently it just contracts a little to much for the sensors' liking. Nothing to worry about as long as it doesn't come on after your up to normal temperature

 

mine did that so i looked under the hood and saw the bracket holding to coolent to the supercharger was broke any help????

can anyone help me

 

That's for the intercooler, not the actual engine coolant. That shouldn't throw any warning lights or anything - just take it to the dealership and they should be able to fix / replace it relatively cheap.

 

Had the same but my drive way is on a angle.
Dealer added a bit,been okay ever since.
But still keeping a Eye on it.

 

It's been in the teens, single digits and minuses here for about 3 weeks... so far, my Cobalt has only done the "LOW COOLANT" business once (when it was -20 and it sat during a double I had to work). It hasn't done it since.

On another thread dealing with the same issue, I had made the comment that my last Cavaliers (96 and 98 2.2L OHV engines) had done the same thing when they were cold. I called my brother, who is a GM master tech (and he rubs it in every chance he gets) and described the symptoms. He told me not to worry about it. The sensor just sticks when it gets cold... i said okay.

And it doesn't appear to be low on coolant, so...

Scott

 

my car does the same thing when its cold out. i think that they all do that. mine is about two weeks old.

 

yea mine did this too on a couple of colder days but it went away after a few minutes.

 

Mine used to do it all the time, turns out my BCM was bad. Has never done it since thankfully.

 

It happened to me too around 29*, it's wierd, but normal for our cars I guess.

 

Mine, was saying Low Coolant then wouldnt get above 130, They replaced the thermostat and it went away

 

I had the low coolant light and the level was fine but it came on every morning so i added a little to the tank and it hasn't came back

 

Weird. I had that happen the last two mornings and even after work and its about 40F 10ish C here in BC. The coolant was a tad lower then the line when hot. BUT... the sensor is at the bottom to it should be affected at all until the tank is empty. Added some and we'll see what happens.

Would rather not warranty it ..lol..i'm sure it wouldn't go over so well is a 'stock' cobalt.

Nate

 

mine does it a lot too, just make sure your not low, you'll be ok

 

Mine does it too when it is cold. And when it warms for a couple of minutes its fine. levels are ok.