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Old 02-02-2009, 11:45 AM
BluesCuda
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Default 2004 Ram hvac/mode knob not working...help!

What can cause the 'mode' or 'hvac' control dial/knob to stop working on the dash of my 2004 Ram 2500? No matter what I select with the knob, all I get is air blowing out of the upper air ducts. The heat and AC both work, but I cannot get any air coming out of the bottom floor vents or defrost ducts.

The blower motor switch and temperature control switch still work.

Can somebody give me any insight or steer me in the right direction?

Any help would be appreciated.

Thanks,

Scott
St. Louis, MO
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