Peterbilt Actuator Location - Doors break on both the panel and the temperature and occasionally the recirc locations. Panel door breaks most often. I have seen some 579 with wiring rubs for the actuators. The mode actuator controls the vent, defrost and floor vents and is in front of your right knee on the end of the air trunk. Take the lower dash pieces in front of drivers seat, and. You have to remove the glovebox to access the blower motor. 2025 579 peterbilt temperature actuator location please blend door actuator mechanic's assistant: The truck mechanic will be able to help you locate the temperature. I know on some of the models it is tight but you can reach and replace the actuator from underneath the dash and pulling some of the dash panels to access the heater box. I have an 2006 pete 379, the actuator that controls the vents, floor and defrost is on the drivers side behind the bottom panel, it's not going to be easy, but i think anyone with a. Should be able to see 3 actuators. The far right one is the re circulation door. The middle should be the heater door, it is a simple on/off. The far left should be the blend door, it. Follow the y that does the defrost piping down to a round drum. On the lh side there is an actuator that rotates the internal drum to deflect air to floor, dash, defrost. The defrost actuator is in the dash right in the middle behind the gauge panel. Thatโs the one that controls the air out of the vents/defrost. Mine was stuck from dirt falling. Pulled the center dash panel out and got to the electric actuator with the cam and it works.
Doors break on both the panel and the temperature and occasionally the recirc locations. Panel door breaks most often. I have seen some 579 with wiring rubs for the actuators. The mode actuator controls the vent, defrost and floor vents and is in front of your right knee on the end of the air trunk. Take the lower dash pieces in front of drivers seat, and.