97 Cutlass 3.1 Low Coolant Light

First of all, thanks all for walking me through the intake gasket replacement. Finally on the road, but a small snag. Around town was fine, six miles at 60 mph resulted in a "Low Coolant" dash light. Went another six miles, let the car sit for 45 minutes, checked coolant, radiator full, tank also up tp 'Hot' level. Temp guage stayed normal, could even see it fluctuate with thermostat opening & closing.

Replaced thermostat when changing intake set. Had both bleeders upon until I got coolant.

Could this be air lock ?

Thanks in advance !

Never mind ! I pulled it up on an inclined driveway, pulled the radiator cap, let it warm up good, replaced the cap and took it for the same ride as above. NO LIGHT ! Guess it just needed a good burp.

Thanks again.

my car is leaking antifreeze from the bottom we have replaced the theromast,hoses water pump its still leaking out the bottom of the car when its running what could it be