The 4 most common part(s) or condition(s) which cause the symptom Washer vibration are listed below starting with the most likely. Check or test each item and watch any available videos.
RepairClinic Item # 2220542
Washer vibration can occur if one or more of the shock absorbers is broken or worn out. Check the absorbers to be sure they are installed correctly and in the right position. Sometimes when a washer is moved the shock absorbers separate and have to be put back together. If they are broken or worn out, replace all at the same time.
RepairClinic Item # 936912
Washer vibration can occur if one of the suspension springs has broken. Check all of the springs, if any are broken replace all of them at once.
RepairClinic Item # 407639
If the washer has a bad vibration in spin the rear drum with bearing might need to be replace. On this washer the bearing is not sold separately, the entire rear drum will have to be replaced. This is a very involved repair and will require disassembling most of the washer. However, if this is the problem it is going to get worse very quickly and so either the drum and bearing will need to be replaced or the washing machine.
RepairClinic Item # 1192062
Washer vibration can occur if one of the leveling legs is out of adjustment. Using a carpenters level on the top of the machine, be sure to adjust each leg until the machine is level side to side and front to back. Once the machine is level, tighten the lock nuts, if equipped, on the leveling leg threaded bolt against the body of the washer to keep them from changing height.