Bring to a shop and have system pressure tested to find where problem is originating
If it is a vortec engine, it is probably the lower intake manifold gasket. In most cases you can smell it when the engine is hot.
To cool the engine in order to prevent overheating.
if fans are working and thermostat is good welcome to the world of northstar famous headgasket/faulty headbolt and stripped block crap engine problem
head gaskets are burned, due to overheating of engine
This is used to keep the motor from overheating and from freezing. Thus the name "antifreeze" and "coolant".
The engine is overheating.
It will destroy the engine from lack of lubrication and overheating.
The engine could possibly seize.
If the engine is overheating or when you service the cooling system and change the antifreeze.
Antifreeze is used as an engine coolant. While keeping an engine from overheating, the liquid also disperses the heat through the vehicles heater core, giving passengers warmth in the winter.
could be your thermostat or you have no antifreeze coolant or your water pump is going bad
Overheating can damage any seal.