i have dealing with this lite for some time now, but is getting worse. I get in to and start up the car if the temp outside is warm but not hot the lite comes on and will stay on while driving i have checked the antifreeze multiple times, i also can hear the fan running constantly. The A/C is not even on I need HELP please i can not afford a lot of money i just took in my 4 grandchildren and this is the only vehicle i have to get them to school Please any info appreciated. it is a Chevy Equinox 2007

 

some testing needs to be done
possible causes are:
-bad thermostat
-restriction in rad internally- tubes clogged
-restriction in rad externally- fins clogged with debris
-maybe even a bad water pump