Agreed. There is no harm that can be done. I was just pointed out that the service manual has a DTC code listed for it. Perhaps it only looks at it when the solenoid is connected, but it clearly is looking at voltage and capacitance in the circuit from the system diagram.
Basically, there is no harm it can do, The only harm would be it either triggers a code that is detected during an emissions check or a Tech looks for it similar to how they physically look to see if you have cats....
go ahead and unplug it.
I just unplugged it on my LS. Will go grab a burger and see how it feels. The skip shift gets shut down with the red key anyways. Will get back to 'Ya. C- YAAAAAAAAAAAAAAAAAAAA