I have a 99 Camaro with 130000 Miles on it and the low coolant light comes on at 210 Degrees. I cant figure out what the problem could be. any sugestions?

 

1. Radiator could be low on coolant.
2. The sensor is junk. They were so unreliable that GM quit using them in 2000.

Take off the radiator cap when the engine is cold and see if it's full. If it isn't then investigate for leaks.
If it's full then the sensor is bad and you can replace it for about $40 or just unplug it and forget that it was ever there.

 

i have this same problem in my 94.. light is on with full coolant and no leaks. i'm guessing the light will stay on even when unplugged. correct? any way to delete light with cats tuner?

 

Some say that it will go out when unplugged.

Don't know if the PCM sees this function or not.

 

I never had a problem with my low coolant light untill I flushed and put new dexcool/distilled water in her. I noticed the light came on yesterday. I turn the car off and restart her and the light is off. I checked coolant level and its perfect. Hmmmm weird.

 

Not correct. At least not in any of the three F-bodys on which I have unplugged the sensor.

 

so i finally unplugged the sensor and the light is off for good. I am just going to use my good judgement and temp guage to make sure my cooling system is up to par. anyway, the light WILL go off if unplugged.

 

You can take the sensor out and clean the post on it with some fine steel wool and it will usually work again.

 

I have the same problem, I just bought an LS1 Camaro this week and the low coolant light keeps going on...where is the sensor located so I can unhook that thing? Pics would be really sweet if anyone has one

 

It's in the radiator tank just under the upper hose. Undo the clip and wiggle it out. Keep in mind that coolant will spill from the hole.

 

Will it stop leaking after a little while after you unplug it and then your supposed to leave it unplugged?

 

I was telling you how to remove the sensor for replacement or cleaning.

To disable it just unhook the electrical wire and forget that it was ever there and no it won't leak by unhooking it.

 

Thanks for the help, got the sensor unplugged and indeed its off!

 

We took a small trip about a 100 miles away in the recent hot weather and the low coolant icon appeared while going from shop to shop. I couldn't remove the radiator cap so I checked the overflow tank coolant level and it was fine. Knowing the sensor's reputation I assumed it had gone bad. I contacted Dal for a price - he replied (about $30) but before I ordered up I thought to check the level in the radiator when cool; for some reason the radiator was down just a little - not more than a pint or two. The moral of my story is that something is going on between the radiator and overflow as there shouldn't be air in the radiator with the overflow tank being full to the mark. I know now to investigate the problem before an overheat. The sensor gave me an alert - I found the sensor to be a useful monitor in this case and if it goes bad someday, I'll replace it.

 

if your coolent levels are normal, 100% that your sensor is blown. i just fix that about a month ago!