· COTM Winner
2014 Cruze Diesel, 2007 Cobalt, 1981 Camaro Z28, 2017 Volt
I mean, they don't cost all that much anymore and make wiring a whole lot easier and don't require hacking up your factory harness...
You should be able to get significantly cheaper ones if you don't want to retain On-Star - Crutchfield lists a number of them.
My wife still uses hers in the Cruze relatively often, even though I have all of our music loaded to a flash drive that permanently stays in the car - she's got some other music that I have no interest in loading to my desktop (Adele, Shania Twain, etc haha) in order to put it on said flash drive, so those she listens to via CD.CD Player!? I haven't used one of those since 2008. I don't want to loose Onstar but the 2G sunset happens the end of the year so, according to Onstar it will become a phone app.