I have a 2000 SSEI with the dual climate control. I put the settings on ac and 60 Degrees passenger side and back seat blow out cold air but Drivers side blows out heat????? Anybody come across this problem and if so what do i have to do to fix it? All fuses and relays apear to be good. Thank You all help is greatly appreciated

you need to recharged your system

Agreed. Try a little freon. 6-8 oz.
I have the same problem. Slow leak and I need to add a little every 4 weeks.