Blower Doesn't Blow Air

I have a 1992 Cadillac Sedan DeVille with the Electronic Climate Control. Even after replacing the blower fan, it still doesn’t hardly blow any air, even though the blower fan is running hard. I took out the heater core to make sure that it wasn’t plugged up. All of the controls work fine (switching to defrost, etc), but it just doesn’t blow any air.



Any suggestions?