Thanks - I think we have a pretty good understanding on how the feature is supposed to work. No doubt that with incandescent lights, in my experience, they mostly worked fine with earlier renditions. However, with the proliferation of far more efficient and quicker LEDs, unfortunately, this causes problems as outlined earlier.
I mean, if you have a parked trailer connected to your truck in a safe environment, there would be no need to enable the anti-theft feature in the first place. So naturally, you only need to enable it for the less safe areas, and it is certainly not doing you any favors by drawing considerably more attention to the trailer by flashing all night long. It's just totally counter-intuitive. Most thefts are opportunistic so waving a banner and saying here I am is not helpful.
GM needs to rethink the electronics on this unit. We know that the PCM and BCM have the flexibility to detect very minute levels and variances in voltages they monitor with various sensors, so they clearly have the capability to use a lower pulse voltage, that is enough to confirm continuity, but too low to fire the lights. I think the point is, GM has largely allowed this tech to flap in the wind, while not keeping up with the innovation in the trailer OEM change to LEDs, which is interesting as they themselves have been chasing this incandescent to LED migration.