Hot air on drivers side cold air on passenger side

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ID Status Date Year Make Model Transmission Type A/C Controls Public/Private
#14658 Closed 2014 Gmc Serria public

My 2014 gmc duel control air blows cold on passenger side and warm on drivers side
Sparky

I would try a recalibration first.

Without Scan Tool

Note:  Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

  2. Ignition OFF.
  4. Remove the HVAC control module fuse for a minimum of 10 s. The fuse is in the left interior fuse box and should be marked as Peps/HVAC, 10 amp.
  6. Install the Peps/ HVAC control module fuse.
  8. Start the vehicle.
  10. Wait 40 s for the HVAC control module to self-calibrate.
  12. Turn the Ignition off for at least 10 seconds but no more than 30.
  14. Restart the engine and check the controls.

 

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