Weird A/C Problem

[OneBad68]

Hello, I own a 2004 GMC Yukon. I have a problem with the front a/c. The sometimes the front a/c will start to blow warm air on the passenger side, while still blowing ice cold a/c on the drivers side. Does anyone have any clue on what this problem could be and maybe a way to fix it? I do have the dual climate controls as well.

Thanks for the help

 

[yukonmpg]

Had a similar problem on my 05 Yukon XL. Took it to the dealer and they reprogrammed the HVAC module and everything is fine. Tech also said the actuators get weak and fail to hold the dampers that handle the airflow. Mine blew cold out the driver side for about five seconds then went to heater while the passenger side was cold. The problem I had occurred after I had disconnected the battery to reset the PCM. Not sure if it was related.