blows hot heat on drivers side but co

What is your question?

I always hear a blower motor running. when I turn on the heat it blows hot on the drivers side but blows cold on the passenger side. this is on defrost, floor heat or vents. this is a dual control. I had a new battery installed recently I was told to disconnect the battery and reset the computer is that right?

What makes this problem better or worse?

nothing

How long has your 2000 Cadillac Seville had this problem?

just bought car