AC blows in the defrost only

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ID Status Date Year Make Model Transmission Type A/C Controls Public/Private
#13273 Closed 07 GM H3 public

I disconnect the battery to change out and when I reconnect the battery turned on the AC only blows and the defrost position
Sparky

Try this recalibration procedure.

Actuator Recalibration

When replacing an air temperature, mode, recirculation actuator or the HVAC control assembly, the following calibration process needs to be performed:

Important:  Do not adjust any controls on the HVAC control assembly during self-calibration. If interrupted, improper HVAC performance will result.

  1. Turn ON the ignition with the engine OFF.
  2. Turn the Temperature dial all the way to the right.
  3. Turn the blower control dial all the way to the right.
  4. Turn the mode position dial all the way to the left.
  5. Simultaneously press and hold the A/C and Defrost buttons until the LED’s start to flash.
  6. Once the LED’s stop flashing, calibration is complete.

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