2007 Pacifica ac/heater fan rattling noise
 

We have a 2007 Pacifica with the following, very annoying problem; when at idling speed, a rattling noise is heard which seems to be coming from the heater/ac blower, since it goes away when ac is turned off. Anybody had a similar problem? This seems to be the only issue that I have with this car so far. wing, very anoying problm