Blend temperature module not working

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ID Status Date Year Make Model Transmission Type A/C Controls Public/Private
#15228 Closed 2001 Chevy Silverado 2500 hd public

Air temperature will not change from cold to hot, replaced temperature control in dash and blend door module, reset module three different ways with no luck. It has computer climate control. 
Sparky

Can you supply the replacement actuator part number and  the location in the vehicle?

Did you connect  the actuator harness and turn the ignition on before  mounting the actuator?  When replacing the air temperature motor, do not operate it without mounting it first. The control head initially calibrates itself by driving the blend door to full cold and full hot. If the motor is operated before installation, the expected “end of travel” voltage will go beyond recorded limits. This will shut the control head down. To fix this problem, remove the cover from the air temperature motor, and using a 9 V battery, drive the motor close to a center position.

Just wanted to make sure you have the correct recalibration procedure for your truck.

Actuator Recalibration

The HVAC control module will relearn the actuator limits whenever power is disconnected and re-connected to the module.

Use the following steps to perform the calibration update:

    1. Turn OFF the ignition.
    2. Remove the battery positive voltage circuit fuse (marked Radio in underhood fuse box) of the HVAC Control Module.

Important:  The scan tool must be disconnected from the vehicle to properly perform the calibration procedure. If a scan tool is connected before this procedure is completed, then new calibration values will not be stored.

Important:  Failure to wait 60 seconds will not allow the HVAC control module sufficient time to clear the old calibration values.

  1. Wait at least 60 seconds.
  2. Install the fuse.
  3. Turn ON the ignition.
  4. Do Not Touch anything.
  5. Wait at least 60 seconds before turning the ignition back off.
  6. Start the engine and test the HVAC functions.

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