No Heat

First thing is to check the heater hoses both in and out with the car warmed up if both are hot then most likely you don't have a plugged heater core. If one is hot and the other is cold then there is your problem. When you flushed the heater core did you see clear water come out the other end of the hose. Also, did you flush it both ways?? If you aren't getting water coming out the other end then your heater core is plugged. Sometimes shooting air through the heater core will blow out the clog. Also, ensure that there is no heater core bypass hose on this model, if there is then take some vice grips and crimp it so the water you spray in actually goes to the heater core. If you are getting water through the heater core then most likely it's your temperature blend door is not opening when you rotate your indicator to heat.