Ice maker makes ice, water dispenses, but machine won't grind ice or dispense cubes

You may have a switch bad at ice dispenser or a bad motor that grinds the ice. The switch is usually the first to go. You will need to check it with a meter.

Check this out and see if it helps. http://seekyt.com/ice-maker-motor-module-repair-for-the-weekend-warrior-and-all-around-handyman-or-woman