Product review (5 stars): GE Washer Model WWSE5240GWW
I installed this mode shifter/transmission on the above mentioned clothes washer.  We have had our washer since 2007 and were dreading making the big purchase of another washer so we purchased this item in hopes of possibly not having to  buy a new washer.  The installation took me approximately 3 hours, I have never done this kind of work on an appliance before but I am pretty good with mechanical stuff.  The biggest problem is removing the locking nut that is under the agitator.  Even after purchasing the tool to remove it, it was still a little hard but a little of persistence and patience paid off in the long run.  If you are going to replace the one in your washer, I would Strongly recommend you purchase the tool as well.  The symptoms of our washer were loud clanking sounds at any wash cycle.  Upon following the diagnostics offered by other people on the internet, I opened the front of the washer and began a cycle and noticed that instead of the agitator spinning by itself, the entire tub was agitating back and forth, hence the tub would hit a metal grove on the bottom pan and make the clanking sound.  Once I replaced the mode shifter, the washer is back to whisper quiet like it used to be when it was new.  A couple of notes of interest, the shifter mode itself does not have tapped bolt holes, however, if you look at the bolts themselves, you will notice they are self tapping bolts.  This allows you to create the thread as you are tightening the bolts.  You will also need a torque wrench in order to torque the bolts to the appropriate recommendation listed in the instructions.  Detailed instructions on how to disassemble a similar washer can be found on youtube by typing in keywords of mode shifter replacement.  During my disassembly I cleaned out the entire tub and this in itself added time to the repair.  By taking into consideration the notes above and being prepared, replacing your own unit will be a breeze and best of all, you will save hundreds of dollars in repairs and the expense of a new washer.  Happy repairing!!!