Hello new to the site. My issue is i have dual air for d/p the passenger side blows cold but the driver side blows warm air my truck is 2004 silverodo what gives. I checked there is no blown fuses.any help would great thanks.

 

does it have 2 systems? maybe low on freon.

 

Those controllers are known to go bad. We had to just replace the one in my fathers 2005 Escalade (same controller you have). His would all of sudden blow hot air out of both driver and passenger side for no apparant reason. Then the blower started barely blowing and we could not get the A/C to even come on. He put a new control head and it is working like new again!

 

It does not have 2 systems but the passenger side blows out cold air drivers side blows out warm air.