Hi everyone. I am having a problem with my 99 buick park ave ultra. I just bought the car and it is has been sitting for a number of years. I bought it for 2 g's with 49 k on it. Great steal. Well now I am having a problem. To start, the defrost and floor vents were the only vents putting out air. I took apart the dash, jammed a stick in the flap for the defrost (to jam it closed) and then I disconnected the actuator that controlled the floor vents. I only need it coming out the vents, as I am in Arizona and never have to use defrost. At any rate, it has been warming up here and with my air conditioning on, I get ice cold air out of the passenger side, but warm air out of the drivers side (on a warm day). I have ripped everything apart and I am frustrated because I cannot see behind the heater core , or evaporator core because it is too difficult to get at. What it seems to me is that there is a door behind those items that is stuck half way. Just a tidbit... the battery was COMPLETELY dead when I got the car . Is there a possibility that the climate control unit needs to be replaces or calibrated? I don't use the auto function. There are 2 main ports where the air blows out of just above the heater core and evap core in the dash. With the plastic vents disconnected, and I put the heater on, only the right side door closes and then forces all the air out of the drivers side port. I am on a really tight budget and cannot afford to take it anywhere. Any Ideas?? Thanks for reading.