low coolant indicator

I have a 2001 Grand Prix SE. The 'low coolant' indicator remains on for about 5 or so minutes after I start the car. I have checked the coolant and it seems to be OK. The temperture is reading well within safe range. Is this just a glitch or does it indicate a bigger problem? Thanks in advance.

The coolant level sensor may have some sludge on it, causing it to give an erroneous low coolant signal.

I have a 2001 Grand Prix SE. The 'low coolant' indicator remains on for about 5 or so minutes after I start the car. I have checked the coolant and it seems to be OK. The temperture is reading well within safe range. Is this just a glitch or does it indicate a bigger problem? Thanks in advance.

Had the same problem with mine. In my case the sensor went bad. I took mine to the dealer since the car was still under warrenty. O had them deal with it.