On mh 2006 Chrysler Pacifica the blower will come on and go off at random on 2004 Chrysler Pacifica

I will have it set to cool and the blower just stops blowing. And at random if will come back on and at random go back off. What could this be?

1 answer
I had to change my blower motor it cost me 80 bucks and its 3 or 4 bolts mine would be on shut off or it would make a loud hum noise