2003 GMC Safari Q&A

2003 GMC Safari Question: a/c or heater

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. -
Answer 1
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. -
Comment 1
The air IS only coming out of the windshield vents in my car. What do I do now? -
Answer 2
where does vacum line conect to engine -
Answer 3
the fan barely blows in front -
Related Items:
the new blower motor burned up the day mechanic installed it (smoke filled van) Replacement is doing the same as the first before it burned, air comes though vent on high speed, then drops off and...