You can't get the motor out of the vent hole..ain't gonna happen. You have to remove the metal shield in behind the rocker cover/engine against the fire wall first. Then you have to take the blower motor assembly out. ONLY then you might have small enough hands to get to the 3 bolts holding the motor on the linkage to get the motor out through the blower motor access. I have never tried what you are trying but then again, what the heck! To make the job easier I would pop one of the arms off the linkage and then you can wiggle the assbly out after you remove the wipers/arms and the hold down nuts at the wiper arm pins.
I've pulled about 3 of these and it has been this way every time.
Btw, your motor is most likely toast. if it is doing that. But you'll be able test it once out.
Last edited by Ceeker; 03-10-2011 at 08:55 AM.