This connector is above the headliner in the vicinity of the overhead console. I found it when I was working on my sunroof. Any hints on what it could be for?

 

What Blazer year and model are we talking about?

 

It's a 2002 Blazer and is seems like a loaded package but I do not know it's aplha numeric designation, I guess I should figure that out.

 

My owner's manual shows two different overhead console possibilities. With a sunroof, you get the short one. W/O sunroof, you get a much longer one. And they can have various mixtures of options, such as the Driver Information Center, and Homelink. So that's probably just the connector for something yours wasn't ordered with.