1997 Chevrolet Cavalier

Live is always red or black... Ground normally green or white and green

My experience is with a 98 and a 99 cavalier but I don't think the changes from 97-98 included the cluster, so here's my experience. There is no designated warning light for the fuel gauge. When the gauge gets to almost empty(just a millimeter or so above empty) the red "check gauges" light will illuminate. I don't know whether you have had the tank this empty or not, but periodic checking of the cluster should make you notice if the level is this low. Hope this helps, it's all I can say with the info posted.

Very common to see rusted and leaking fuel lines.Tanks have also been known to rust and leak

replace thermostat in water cooling line off the rad . 5$ at petboys or equiv. buy the gasket too.

is the fan coming on??? could be a thermostat, or time for a new rad, my guess is rad

When engine is hot is the top radiator hose hot also ?
If not install new 195 degree thermostat. Is the blower air hot now ?
If not the heat door may not be opening, or you could have a blown heat gasket.

Its possibly the thermostat , check by watching the temperature gauge if equipt with one and see if the engine is around 195 deg F or 95 deg C if not the thermostat is open all the time , ( stuck open ) not allowing it to get hot enough to get heat, this is the most likely cause.. Another is air temp door not moving to the hot position. But you said no other problems...The heater core may also be plugged or restricted , you can flush it out with a garden hose ect. good luck and hope this was helpful...

I wouuld agree that it is grounding out. Knowing the cavalier, it is gonna be in an impossible place to get to like under the dash.

Something is wrong. What does the steam smell like? Oil or antifreeze?
Look closely for coolant seeping onto something hot and vaporizing, if that's what you smell.
Check your coolant level and oil to verify if you may have a leak.

the distibutor cap and rotor also and maybe even the fuel filter