1991 Other Oldsmobile Models Automatic climate control issue

There is no Blower motor resistor or switch in this model with climate control, all of that is electronically done by the Blower control module which, as I said, has gone kaput 3x in 3 days.

Not sure wht Mt1 is, but I had a similar problem 2 yrs ago & was told to replace the B M R. Looked & looked. Finally was told by someone that you get one or the other depending on system. This module fits right where a B M R would go on a non automatic AC /climate control like my similar '91 chevy wagon has- that car has the B M R where my olds has the module. Thats what my olds manual shows as well, I just cant figure out how to trouble shoot what the underlying problem is, though it was suggested on another site that a failing blower motor could take out the module.

Is it possible for the fan motor to still work but create the issues that would take out the module?
I believe that was what I was reading on a different site yesteday, though it was a different model/yr GM car and the guy was no expert, he was just relaying what someone else had told him. I didn't really "test" the blower motor, I just hooked directly to power & it runs.