Any ideas why a low coolant light would be one when radiator/expansion tank are at correct levels? Are the sensor(s) on the radiator or on the expansion tank?

Thanks for the help guys!

I found a thread that discusses this issue... I'll mess with the sensor and get back on here if it doesn't work.

The inside of the expansion tank gets 'cruded' up and restricts the sensors ability to 'see' the level - specially bad when the 'perminant' type coolants are used ...
The sensor is mounted on the expansion tank.
Disconnect the sensor lead, remove the tank and thoughly clean the inside with warm water, soap and a brush - you can't get it all, but you can get most of the $hit out.
Reinstall and the light should go out.

Hope this helps :yes:

And if it doesn't go out, chances are you look over your car well and you can just disconnect the sensor all together. I don't own a car with a low level sensor and I check mine regularly like it should be. It is there for those who don't check anything, just like the dumby oil light.

I had a similar problem on my 2000 Silverado. Turned out that it had a blown head gasket which made the overflow tank bubble. I caught it too late. :clonk:
Check yours while the motor is running and at temp... may take a minute or three to see.
Also check that your oil has no coolant in it. Better safe than sorry... good luck,fingers crossed.