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. Figured the doors inside are. Peterbilt has determined that in certain model 579 and model 567 vehicles that the hvac mode door actuator may send faulty signals back to the hvac control head. I need to find the location of the defrost blend door actuator in a 2025 pete model 348. I have all the lower panels off underneath the dash as well as the glove box and instrument. When i plug the actuator in, red stays at solid 13v (truck is running) orange has low voltage around 10 and black now has a solid 13v. Looking at a wiring diagram, i know red is. View and download paccar peterbilt 587 owner's manual online. Paccar peterbilt model 587 truck owner's manual. Peterbilt 587 trucks pdf manual download.
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.