passenger side heat, drivers side no heat

[roper 1]

I just spent the last 30 minutes or so looking for information on heaters. Seems there's a lot of issues but none I could find like what I have at the moment.

I have plenty of passenger side heat but all cold air on the drivers side. I'm reading about acuators and such and I'm guessing they're under the dash someplace. Is there anything under the hood I can check for first?

as always, thanks...

[VicCTS]

I have the same issue, also on a 2003 CTS. Anyone have an idea where to start? Thanks,

[kdstrum]

i have the same problem the dealer told me there is a motor in the dash that controls the vents i think he told me 345.00 to fix if you hit f1 and f6 it will give you the code

[VicCTS]

Thanks!