I have a stand alone 6L80e with a PCS controller and no BCM. It started life as a 2009 Escalade OS 24249179. I am able to read and write a tune with no problem. Transmission shifts normal and works good. For some reason the VCM Scanner only picks up a few random PIDs:
-Vehicle Speed
-Engine coolant temp
-Accelerator petal position
-throttle position
-control module voltage
There are a whole bunch of missing PIDs which would be helpful for trouble shooting TUTD, shifter position, etc. I have a regular OBDII scanner that has the same issues.
Does anyone have any idea what I might be doing wrong or what might be wrong with my TCM?
Thanks