The washer shakes and vibrates excessively with large, medium and small loads.  The washer may be ok on a concrete floor but not on a wooden floor.  I ordered vibration isolators to be installed with the washer but the GE installer said I didn't need them which was wrong.  I added vibration isolators which reduced the shaking and vibration somewhat but the washer still rattles the cupboard doors and you can feel it in the floor.