I have an L96 paired with a 6L90 from a 2014 Express van. They both came from the same unit, along with the E38 ECM. The data bus is unstable and disconnects when using VCM Scanner but will not load with VCM Editor. If I remove the TCM connector from the transmission and Install a 120-ohm resistor between pins 10 and 11 at the transmission connector, I can communicate with the engine. I removed the VATS and wrote back to the E38 with the transmission removed from the data bus. However, when I reconnect the transmission, the data bus becomes unstable. I tied my OBD port into the can between the TCM and ECM from pins 27 and 28 on J1 at the ECM. Pins 27 and 28 of J1 are connected to the Trans on pins 10 & 11. I don't believe the transmission communicates, as the speedometer shows 158mph when I can connect to the ECM. Any help would be greatly appreciated.