Yesterday, while driving, my '94 530i just cut off. I had it towed to my mechanic who determined it was the trans control module (the thing was buzzing). I then had the car towed to the local BMW dealership so they could "test" the TCM as there has apparently been problem with the "chip" in the units. Does anyone know anything about or had any problem similar to this? If they can't reprogram the TCM, they are going to charge me $760 to replace it plus labor....I'm trying desperately to avoid this. Thanks for the advise.