Were is my blend door accuator 06 trailbla zer

The blend door actuator is located in the air ducking about the center of the dash between the heater core and the AC Evaporator core (hot and cold air is blended). To access it you must remove the entire dash assembly, about an 10 hour job. It is recommended that both the blend door and the actuator motor be replaced at the same time, the doors warp and this is what in many cases causes the tiny actuator to fail it gets overloaded.