A/C Control '00 Grand Am

[cearley514]

My air blows fine but the directional vents only allow the air to blow both top and bottom. can divert the vents to the defrost position, but not to the floor or top only. Anyone have any suggestions on how to fix this issue?

[3100]

Hi, there are vacuum lines behind the control unit; check that all vacuum lines (they are color coded) are connected to appropriate color, and that no thin vacuum lines are disconnected under the hood.

Also if someone was replacing heater core chances are that someone did not connect those flexible plastic pipes correctly.