2003 GMC Safari Q&A
2003 GMC Safari Question: a/c or heater
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. - Russ
where does vacum line conect to engine - Visitor
the fan barely blows in front - kitsap
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...