I have a 2003 TC 2000 that came in yesterday with an issue with the transmission. The speedo went dead and the bus would not shift up or down, and it lost power. Ive tried getting the speedo back working but no luck. I checked the PDU box on the frame and the fuses in there are all good. Something is keeping the bus in this limp mode and I need help trying to figure out what the cause may be.