I have a 96 Blazer 4.3 litre the heater is runnng very very hot I have changed the thermostat flushed the rad and the heat gauge is running at normal temp but the heater is still to hot compared to what it used to be does anyone have any idea's what else to do

 

Well the heat will get hot when the truck is up to temp. Remember that its like 195 degrees, its possible that the heater core was partially plugged before the flush or the thermostat was stuck open before like mine was.