Hopefully someone knows about this problem

I have a 2000 GTP with climate control. My blower motor went from intermittent to not working at all. I bench tested the motor and it was fine so I replaced the module. Module looked almost melted where the plug goes in and plug also looked a little burned. Module to fan side looked ok.

Bought new ac delco module and installed it and it worked great for about a week. I started up the car after work today and the fan went to high for about 3 minutes then it quit. I took out the new module and PIN B isn't melted but it does have a ring around the pin like maybe it started to get hot.

I guess it could just be a coincidence and now the fan died and the module is ok but I have a feeling if I take out the fan it will run when I bench test it.

Any pointers appreciated!

thanks,
-Dan