Just finished installing a BlueStar 2010 and thought I would share some pics
Removing the lower dash is all that is required, start with panel below steering wheel (1 10mm bolt and two phillips screws)
Then two 7mm bolts on the center section. Then pull from left side working the clips lose as you go.
I used double sided tape and zip ties to secure the CoStar unit.
Location of OnStar
BlueStar installed