It is located on the HVAC box behind the dash. Unfortunately the dash assembly has to be removed to gain access to it.
The temp blend door actuator is probably at fault.
If you are refering to the temp blend door actuator, it is located behind the dash on top of the HVAC box. The dash assembly must be removed to gain access.
Probably won't be fixable, it is electronic. Replacement is necessary. Dash assembly must be removed to gain access to the temp blend actuator.
The temp blend door actuator would be found behind the dash assembly mounted to the HVAC box. Unfortunately the dash needs to be removed to gain access to the actuator.
The temp blend door actuator is probably at fault. Replacing it requires removal of the dash assembly.
There is a temp blend door controlled by the temp control switch. The temp blend door is run by an actuator. If this actuator needs replacement it requires removal of the dash assembly (big job).
Temp blend door actuator malfunction.
Assuming the blower motor is working, it could be a bad thermostat, plugged heater core or a bad temp blend door actuator.
Changing the heater temp blend door actuator requires removal of the dash assembly. Big Job. You will need a shop manual to attempt that one.
Sounds like the temp blend door actuator is at fault. The plastic gears within the actuator may be stripped. Replacement calls for removal of dash assembly.
The temp blend door actuator has failed.
The temp blend door actuator is broken.