[95/GT/5.0]

Sounds like you have a problem with the coolant level sensor located in the plastic overflow bottle.In my 95 it is anyway.I had the same problem.Take the cap of the overflow(not the radiator cap) the overflow cap and clean the sensor looks like a straw or tube,make shure nothing is blocking the opening,make shure the water level is on the full cold or full hot line,which ever the car is hot or cold.You may have to flush if dirty .Check the connection (wires at cap) and make shure there are no leaks in the water bottle.Turns out my water level was just a little low in the overflow bottle causing the light to come on.The light resets each time you turn your ignition off/on.If the light is on,even with a satisfied sensor it will not turn the light back off.You have to turn the ignition off to reset the computer.Hope this helps.