First, I guess I'm glad I didn't waste time tracing down wiring to make use of the 'speaker' if it is actually not a speaker.
Second, it definitely has some sort of static noise coming out of it when the truck first starts. Everyone else who drives the vehicle claims they can't hear it, only me. But they also all claim they can't hear the voices talking to me, so they must be nuts
Third, what the heck is that thing if not a speaker (sounds like something to do with the climate control system)? And how does it work?
Finally, where is the on-star speaker? Is that the small black deal near the upper center console that I thought was the mic? If so, where is the on-star mic?