So I have a 2012 GSR. And I was thinking of taking out the stock stereo and replacing it with a nav unit with BT. So a few questions that I had was.

Has anyone figured out if the new nav unit for 2014 will work with later models?

And can the aftermarket nav units still be controlled by the controls on the steering wheel?

 

1) Not sure if the 14 NAV will work...hopefully someone can chime in.

2) Yes there is!

http://www.evoxforums.com/forums/showthread.php?t=55719


Good luck