Question about 2001 Dodge Ram 1500 Truck 2WD
The fan wors fine,,,, its just that its stays at the feet position at all time.. can not defrost or nothingelse..and last week i had no heat so i thought it was the thermostat so i changed it... and no change ,,heat goes on and off..but the fan blows ok all the time..can it be the heat control
I think the heat control in this is electric and a little motor moves the damper open and closed you can check the two motors but its probable the heat control unit check and see if you have power going to heat unit
Posted on Jan 10, 2013
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Posted on Jan 02, 2017
NO, PROBLEMS ARE NOT RELATED SEAT MODULE NEEDS TO BE PROGRAMMED AT CHEVY DEALER TO FIX ISSUE. IF YOU HAVE AN AUTOMATIC HVAC CONTROL UNIT WHEN YOU REPLACE THAT YOU WILL ALSO HAVE TO HAVE THAT REPROGRAMMED WITH THE LATEST UPDATES. BUT THERE ARE ALSO A LOT OF PROBLEMS WITH THE ACTUATORS THAT CONTROL THE MODE AND TEMP DOORS. THE ONLY POSSIBLE WAY TO DIAGNOSE THE PROBLEM CORRECTLY IS WITH A GM SCAN TOOL. GOOD LUCK
Posted on Aug 13, 2009
you may have abad slector door acuator.which is alittle motor bolted on the heater box.It move a door in box to direct air flow to right location.hope this helps.
Posted on Sep 27, 2009
Tips for a great answer:
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.
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