heater vent control doesn't change air distribution
my 2002 LeSabre Limited heater vent Air Flow control appears to work, it
lights up and when I press the button it indicates that it is changing the
output from top to middle to bottom, etc, but the airflow doesn't change, it is
always coming out the top, at the windshield, and a little at the bottom, but
essentially nothing coming out all the middle vents across the width of the
dash. I don't know if the venting is controlled by electrical drives or vacuum.
I removed the right bottom panel and all I see are electrical
wires/connectors, and I don't see any vacuum lines. Can anyone tell me
what/where the controls are for the various vents? Thanks for any help.