Where is the heater control valve on a 2001 Dodge Ram 1500?

  • 2001 DODGE RAM
  • 74,000 MILES
When running the air conditioner on any speed but high it will switch to heat at any given time but mostly when coming to a stop. It will also do this when it is just on vent.
Do you
have the same problem?
Sunday, October 16th, 2011 AT 3:39 AM

1 Reply


This would be a blend door actuator problem, here is a guide that will show you what the problem is,


Here is a diagram and instructions to help who you where the heat control is on your car.

Turn the ignition switch to the run position.
Locate the temperature control knob in the mid (12 o'clock) position.
Turn the ignition switch to the OFF position.
Disconnect and isolate the battery negative cable.
Remove the instrument panel from the vehicle. Refer to Instrument Panel System for the procedures.
Remove the HVAC housing from the vehicle..
Fig.24 Blend Door Actuator Remove/Install

Unplug the wire harness connector from the blend door actuator.
Remove the two mounting screws which secure the actuator to the housing.
Slide the blend door actuator off the blend door shaft.
NOTE: A black plastic coupler may be attached to the blend door shaft. Remove the coupler and inspect for damage. Reinstall if there is no damage found.


NOTE: Before installing the blend door actuator, be certain that the blend door is not binding and is capable of full travel in both directions.

Align the actuator with the blend door shaft and rotate the actuator to align it to the mounting bosses on the HVAC housing.
Align and install the actuator screws. Tighten the mounting screws to 2.2 Nm (20 in. lbs.) .
Plug in the wire harness connector to the blend door actuator.
Install the HVAC housing in the vehicle.
Install the instrument panel in the vehicle. Refer to Instrument Panel System for the procedures.
Make sure the Temperature Control Knob is in the mid (12 o'clock) position to allow the actuator to automatically position itself in the mid position and come to a complete stop when powered up.
Connect the battery negative cable.

Please let us know happens so it will help others.

Best, Ken

Was this
Thursday, December 15th, 2016 AT 5:30 PM

Please login or register to post a reply.

Recommended Guides