2004 GMC Yukon "heater door actuators" Questions

...heater core and to defrost or vents. These doors have actuators which run on engine vacuum collected in a vacuum resevoir and held by a check valve. A vacuum leak, or bad check valve or bad actuator ...

...heater control. the temperature control bend door is electrically (not vacuum controlled) moved by a part called the blend door actuator motor, it is deep inside the dash and is what has gone wrong ...

heater will not blow hot air because the blend door Actuator is not working correctly. It seems like it is over travels and gets stuck or something. Tried to reset it by removing the HVAC fuse. Bought

...door actuator then disconnect battery for 5 seconds and reconnect after changing the part, turn key on for 60 seconds with touching heater control to allow actuator to program and then it will

door actuator located for the front climate control system and how do I get to it? its located under the dash on passenger side right before heater core , you have to take the lower dash apart its not

...heater valve not closing...Is the the same thing as the blend door actuator? Should I start with that or the rear ac expansion valve? I have read that it could be many things. Is there one that would ...

...heater won't get hot Could be a cooling system problem; Ranges from a leak in the radiator, radiator hoses, coolant reservoir, low coolant, even a bad coolant reservoir cap could cause it. Also water ...

...it blowing under the dash but it wont blow dirrectlyout of the AC portals look under the dash near the heater vent door control you probably have a small hose off, or; a linkage broken to the ...

Heat heaters (both passenger and driver) will come on, then go out in less than one minute. Push the buttons again - they come on but go out quicker. Press again, they go out almost immediately. What ...