I have a 07 caravan and the heat quit working. We replaced the thermostat and flushed the cooling system. Not sure what else to do

 

Flush de heater core.....from both sides many times...shoot water in 1 hose watch it flow to the other hose then again reverse............

Before you do this feel if those 2 hoses are hot with the heat at max in car........are they both burning hot? If 1 is colder than the other flush it

Did you bleed the system properly?