GE Front Load washer doesn't spin
Yes, you can use service mode to debug anything wrong with your washer! it will debug item by item till you locate the abnormal function then you can find right solution to fix it.

From the behavior, it mostly like the water pressure component has some problem,which will cause it can not detect water is enough to trigger spin process. for example: water pressure controller abnormal or the water pipe leak water,which will cause water pressure detection fail also.