Blower Fan Motor is giving us problems

Hello, I have a '96 Dodge Caravan SE w/ 87,877mi.
I have a strange problem with my van's A/C system. Every time I turn on the blower, there is a clicking noise on the passenger side (under the glove compartment, where the passenger's feet would be if they were sitting in the seat) that will click 20-25 times, and then stop. The blower will still pump out the air, and the heat (or air conditioning) still works fine. I have been researching the internet and cannot find an answer. Any help is appreciated!

--==Mike==--

I'm having the same problem with my 91 Chevy Truck. Now it is also clicking after I turn off the car and take the key out. It only clicks for like a minute and then goes off the same thing happens when I run the AC and mine also sounds like it is coming from under the dash on the passenger side. I'm assuming something with the blower motor.