I have been doing some research on this for a few days and I think I have an idea of the harnesses and junk I will need. Is there anything I'm missing? I'm trying to retain the On star and door chimes AND steering wheel controls. So here's what I got so far:
1) Metra 99-3011s double/single din kit
2) Metra 40-EU55 antenna cable
3) Metra GMOS-044 GM factory integration interface adapter for 2010 and up
4) Metra axxess ASWC universal steering wheel control interface
Is this it? Any help would be greatly appreciated.