power seat motor. forward and backwards...??
 

My 98 blazer driver seat is all electric. I know these are famous for going bad and not working for a few different reasons. I have trouble shot it and found my motor for the coward and back motion is not working. There is full power to the switch and then to the motor but no movement from the motor. I also took it off the rail and tested it.. still nothing.
So im trying to find a new one. This is where the problem lies. Anyone know the part number or where to get one? Of course the local auto places dont carry it. And looking thro the net isnt helping.( might be because im not using the "correct" name.)

Of course I can try the junkyard but im scared they will be shot as seeing how this is a common problem.
Thanks for any help.

All 3 motors are the same:

Genuine MOTOR (22138358) for your GM Vehicle