This 2001 Dodge 1500 Pickup was already in the shop for a temperature control problem and while working on it I notice that the blower motor was very noisy and had a bad vibration to it.
There are three screws that have to be removed to take the blower motor out for inspection. Two are clearly seen in the following picture and the third is behind the motor out of view.
I pulled the motor out and this is what I found. A lot of leaves.
I vacuumed the leaves out with a shop vac and reinstalled the motor. Much Better!!!