I have an 09 and I want to install an aftermarket deck. I would like to keep the onstar, does anyone make an interface? I looked on pac audio but they didn't list anything. I assume 09 is a true double din correct? I want to put a dvd /nav touchscreen and pull out the cd/mp3 player. I know I need the kit and harness I have done all that before I just wasn't sure the size or the Onstar?
Thanks
