How do I remove the agitator on my ge washer?

You could get a piece of rope under the agitator and yank upwards(watch yer nose). OR ya can grab it by the neck and snatch it off if you is big as hulk hogan.:D
They do sell a gadget that has 2 loops on it a flat bar and a handle. . What ya do is secure them loops oposite each other and start turning that handle. The flat bar lays across the top of the machine. You keep a twisting and that agitator will eventually pop off there. Or do like bubba and hook a chain paw to it,let gravity do its thang. Seen it.