jolson

I've been trying to figure out why my front vents all blow warm air and the rear is ice cold.
I've done the reset by removing the HVAC fuses, pulled the blend door actuator under the passenger side dash and cleaned the contacts inside. But now I'm thinking it might be the fresh/recirc actuator as when I press the recirc button on the control head I don't hear a change. I hate to pull that one (along with the dash cover, etc) if don't need to.
Or I've read if low on freon the back may still be cold since it's run different. My lines under the hood get cold/sweaty so I feel like it should be getting cold to the front.
Any ideas for help in troubleshooting or should I just give in and bring it in?

Oh and one last thing...I've read that there was a TSB #06-01-38-003 for the actuators hunting and causing a shutdown so that's another possibility/reason to bring it to the stealership to have it checked.