So steam coming out my vents fogging my windshield it smells like antifreeze but theirs nothing leaking inside my car, its now starting to run hot not sure what if its the heating core or cooling system.

 

car is a 2005 jeep grand Cherokee limited

 

This is the Cherokee (XJ) section, not the Grand Cherokee section. But that is the symptom of a leaking heater core. The heater core is part of the cooling system and has coolant running through it. It is probably leaking causing you to lose coolant, hence why it's running hot.

 

Heater core. Check this out. Its easier than you may think.