The sticker with the motor part number is actually on the front of the motor (not on top, as shown in the bulletin). The part number to be concerned with starts with '175D51'. If you read the thread I referenced (http://appliancejunk.com/forums/index.php?topic=11579.msg59814#msg59814) you'll see that the motor is indeed fine but that the software that controls the motor and mode shifter has a flawed routine that under certain circumstances will burn out the the 20¢ thermal fuse in the mode shifter. If you avoid those conditions then yeah, you don't need to change the motor. The most recent GE Part Number for the motor is WH20X10093.
Here's a picture of the label for the new motor (WH20X10093):
And no, the bulletin applies to all Hydrowave machines. There are quite a few out there that aren't affected but that is because they are newer than the bulletin and therefore have the corrected firmware.
PS: You're on the right track dealing with Customer Relations but might not be aggressive enough. I'd use E-mails and maybe attach the service bulletin. I had an easy time of it because I'm the caretaker of a herd of 6,000 or so GE appliances and have an assigned Relations Rep. Persist, as it is obviously a flaw they were aware of!
They're (she's) not budging. Either 50% off parts or prorate the cost of a replacement washer. Even if I emailed the service bulletin, it wouldn't matter because they don't show anything on their end that essentially is a recall
... could you im me the name of the rep you're working with?
Also she said with these washers there are no warranties on parts outside the standard one year warranty - is that right?