This happen today 3 times for about 10-20 sec most and stopped.Originally I thought that fan maybe going bad or something got inside that blower thingy.
Turn the fan off and and that noise still continiue.What it possible can be???
Just try to save myself another trip to the dealer.

 

take out your cabin filter and check if anything is stuck in there like leaves or other garbage. Remember to put the car in recirculate mode first.

 

I did ,nothing there.Fan was off completly and noise did not stop.