Thanks for the link. I decided to stop by the shop this morning, and the short story is that they replaced the Volvo valve body with a GM sourced one back when they did the original rebuild because of a shifting problem. Now that this new problem has come up, they tore it apart and looked more close...

Nobody?

Are there sensors/solenoids used ONLY in the geartronic mode?

I'm in a similar situation, so I hope it's okay that I tag onto this thread as perhaps we can help each other. I've had a 99 S80 T6 for a couple years now. The car has about 130k miles on it and last month the GM transmission gave out. And by gave out, I mean none of the gears engaged. Volvo wanted ...