Some 1887 Corvettes came with separate driver and passenger climate controls. The most likely cause is the control system, running a self test will show if the vent doors are operating properly. If the control is ok then the diverter door system is stuck.,
its probably the dual air conditioning door lever the little motors go bad or its the control switch on your console
Answering "Why would the AC blow cold air on the drivers side while hot air blows on the passengers side even when all controls are set on cold 1997 Oldsmobile Aurora ?
in most cases it is low in frion but sometimes it can be a relay or even a compressor best to check with a technition
heater control valve is bad on the drivers side.
An air conditioner blows out heat
it might be your fuse. Does your seat warmer work?
If your air conditioner blows air but it's not cold air then you probably need freon in your air conditioner
The Air Conditioner is on
Well the main reason why your car blows out cold then hot is because the air conditioner may not be working properly. You should go to the car shop and get it fixed.
The 1979 Chevrolet Corvette air flow door might the stock in the position so that air only blows out of the floor vents. The air flow door is located next to the blower fan.
the system is probably out of coolant.
Your average A/C unit blows heat through all vents.