9-5 winter blues: hot on one side, cold on the other.

[roblistens]

hello all! Am supposing this is a blend motor that no longer functions.... since the driver's side is perfectly comfy but the passenger only receives cold air (especially on the "Floor-level" setting). Is the change-out of the PS blend motor a real challenge? I'm not trying to solicit anyone to come fix it (!), just wondering what I might be getting in to? thanks in advance... rob

[9-3 Aero]

Perform calibration: Engine running, press ACC "AUTO" and "OFF" buttons simultanously, and note any fault code(s).

Note thread: http://saabworld.net/f9/air-conditioner-faults-31019/.

The culprit could be the air-mixing motor, the shaft between the motor and flap (a known problem) or the passenger side temperature sensor. Replacement of the motor is not a challenge; the (intermediate) shaft may be a little worse.