It's a Continental part, looks almost identical to the Onstar module they pulled out of my car (and OnStar still works). Works 100% like my wife's GXP does...
2004 Cosmos Purple GTO (summer toy)
2009 White Hot/Onyx G8 GT (daily driver)
2009 White Hot/Onyx/Red G8 GXP (summer toy)
1998 Black Olds Aurora (retired