Removing the cowl panel was fairly easy. You have to remove a few clips and the windshield wipers. A 14 mm wrench is used to remove the nuts securing the wiper arms and then the nuts can be placed on the stud to protect the threads as you tap gently with a hammer to loosen the arms.
Good luck!
I think I found the entry point on my Leaf.
Something got in and filled our blower wheel up with duct insulation and leaves and such.
I cleaned it all out, cleaned the cabin filter, blew out the ductwork with a yard blower, and put everything back together.
Two days later the blower motor...