Air-conditioning/heater

[Pitcher55]

Hi,

2003 4Runner V8

When I turn the AC on, I get cold air on the passenger side, and warm air on
the driver side. The fan works well, and I can switch between all of the options on where the air comes out.
I had some work done on the steering column at the dealership, and I am wondering if something happened then. I did not notice until I needed to
run the AC. I have checked for anything obvious, but no luck.

Thanks,

Kip