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[a_disalvo]

Thinking of replacing the factory radio & cd player in my 2013 SG with the factory unit that has the GPS. Are these available used? Is it something simple to swap out? Thanks, Frank

[UltraNutZ]

if you're referring to the stock head unit with GPS built into it, don't waste your time or money..

IMO you'd be much better off with a RoadTech Zumo 660 or 665 with overlay harness.  All TBT directions would then come through your audio setup.