A/C Vent

I currently own a 2000 impala and my a/c vent is stuck blowing air in the forward and donward position. B/C of that, I have more air coming out at my foot instead of my head/chest area......

Any Idea how to fix it??

Thanks,
jsantiago75

It's likely that the HVAC control system has lost its vacuum supply. There should be a vacuum line from the intake "T" to a fitting on the firewall.

Thank you..