I have checked all fuse I have done the compute I have done the c is there anyway to check th is there anyway to or the doo the door blender without cracking the das without cracking the dash opening

Blend door actuators can often be replaced by getting underneath the dash. You will just have to assess the situation on your SUV.

What does your temp gauge indicate? Could be a bad thermostat, clogged heater core or control valve.

With the engine at normal operating temperature and the heater turned on, compare the temperature of the hose going into the heater core to the hose coming out.