Okay so I just picked up an Avic D3 head unit and i am extremely pumped. I have a 2008 cobalt ss with on star. I am wondering what wire harness I need and whatever else i need for the install on the car. I also would like to put a bypass if possible. Thanks for help everyone I am extremely excited to put this double din in!

 

I have the D3 in my GLI and I love it! Works great. You should definitely do the bypass because the unit is pretty much useless without it. You can only listen to music/ look at the map while driving. I don't remember what wires you need to change to do the bypass but I found it online when I did mine. I believe you change the wires placement in the harness and just ground it. Good luck!

 

Anything else about the hooking it up to a cobalt with onstar on which wire harness i need. thanks

 

pioneer or non pioneer

 

pioneer system with the subwoofer.