[FONT=Times New Roman][SIZE=3][COLOR=#000000]First make sure the belt is still intact and there is nothing mechanically bad as in the tub spins freely. If there isn’t anything mechanically bad you will need to enter the service mode to view the error codes. The error codes will give you a starting point as to what the problem may be. Here is a few links that will help [/COLOR][/SIZE][/FONT]
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GE Front Load Washer Error Codes
GE Front Load Washer Service mode
GE Front Load Washer Won’t Spin Or Tumble
[FONT=Times New Roman][SIZE=3][COLOR=#000000]For additional information here is a service manual. [/COLOR][/SIZE][/FONT]
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http://www.applianceblog.com/manuals/GE_Frontload_Washer.pdf