Hello! My silverado hasn't had a working blower in a while now. I replaced the resistor because it quit working except on high, then it quit working on high altogether. I replaced the fresh air blend door actuator today and decided to remove the motor and put 12v to it. It worked fine, so I put it back in and it started clunking on lower speeds and got a little faster as I turned it up to high. It clunked on for several seconds and quit. I did bang on the motor housing and it slowly clunked some more and stopped again. I also get 12v at the leads going into the motor. Any ideas? Thanks.