There was a blockage in the air vent system (i think some glove compartment junk had blown into the system from there) That was cleaned out. Then the system was recharged. When I picked it up it was working great. I'm suspecting that some junk didn't get cleaned out and has since shifted so that now cold air can't reach the driver's side. It still reaches everywhere else. I was specifically looking for a dashboard diagram on how to take it apart and go in to check the vent tubes.