If the codes aren't easily found they are most likely dealer level codes.
Your dealer knows what they mean, at least to the level of reading the code and what the description is.
For most people, there would be no difference but I think they're trying to avoid litigation. There are already people trying to blame bluecruise alone for causing accidents.
However, I do agree that it would be nice if they could combine sway control with the other driver assist features.
I haven't seen what gm is capable of but with the endless combination of trailers and the people who tow them, there is no safe way of auto driving with a trailer.
If it's really an inconvenience then just disconnect the wiring harness.
It's very easy to accidentally open the frunk or tailgate or set off the panic alarm when the key is in your pocket. I've done this a few times over the last 1.5 years.
Does your blindspot monitor not come available if you program your specific trailer?
In any case, the driver assist features like lane centering and bc are deactivated to prevent going out of control with a badly loaded trailer. It makes perfect sense that they don't allow it.
Definitely could be software related. Have a scroll through all the settings and the status indicators for revision level of updates.
There is also a maintenance info screen that can be accessed through keypresses.
Search the forums for the full details.
Some people also had module...
Your dealer is incompetent and full of bologna.
No, it's your dealer. I doubt being ev has anything to do with it either, they'd most likely rip you off with any vehicle you brought there.
Name and shame, at least save someone else the hassle of visiting them.