is the resistor on the firewall, could not tell fr photo
is your control analog or 4 steps?
I have analog and the blower varies in speed.

Have 2000 bonneville blower motor is noisy and the speed varies is the speed possibly the resistor on the motor? It is 256 from autozone the motor is 135. I will check behind the filter but resistor may require removal??
How does it get removed heard firewall and others under dash??
Thanks Steve