This rear view mirror is from a 2009 - 2011 GMC ACADIA.
It has Auto Dim and ONSTAR.
It has a Large 3.5" LCD Display.
No plug, all pins have been identified and marked.
I did a bunch of research for this before I bought it. The rear bracket fits perfectly on the stock Z mirror bracket. I tested it and it fit perfectly.
I bought this with the intention of swapping out my Homelink mirror for this one. I was going to then attach both a rear camera and a front camera to the unit. I wanted auto dimming, and a reliable, bright LCD screen, so I went with an OEM part, rather than those Chinese products that are hit-or-miss.
Long story short, my car was stolen. So I don't need this any more.
I paid $250. I'll take $200 shipped anywhere USPS Priority Mail goes, with tracking number.
The shipping will cost me about 7 bucks, you should get it in 3-5 days.
Or, you can pick it up. I'm in Miami/Boca Raton.