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A/c or heater

(2003 GMC Safari)
in Monterey Park, CA on June 24, 2009
a/c or heater not blowing air from front vents. you can hear the blower motor, but can barely feel the air. high setting also not working. only med. and low work. please help.
Displaying 4 answers & 1 comments
Popular Answer
on June 26, 2009
Is it possible the air is coming out of the windshield vents all the time? That would indicate a problem with the vacuum supply from the engine to the A/C control assembly. As far as the blower motor goes there is a the high speed works through a relay which is part of the blower motor resistor assembly. Two possible causes would be the switch or the resistor assembly. Please have the blower motor system diagnosed to find the cause of your problems before replacing any parts.
on July 19, 2010
The air IS only coming out of the windshield vents in my car. What do I do now?
on April 22, 2010
where does vacum line conect to engine
on January 11, 2016
The vacuum lines feeding the diverter switch get brittle and break. If you don't hear a slight vacuum sound when you switch from defroster to vents, check the vacuum lines for cracks or leaks.
on July 07, 2010
the fan barely blows in front
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