My coolant light is flashing me!!!

I just had the manifold replaced on my 97 Cutlass Supreme and its running fine but the coolant light keeps flashing. I have looked and there's plenty of coolant in it and its not running hot. Is this something that I need to worry about? Or is it probably just a problem with the light itself? I don't really think its anything to worry about but I wanted to get see what others think.

Its probly air bubble trapped on the sending unit.

try tapping on the resivour, or remove it and wipe it clean and reinstall. I'd also check the wires to the sensor, could also be the problem.