Use all the accessories on your 2016 and newer model GM vehicle when you install this Metra data interface. It lets you update it via USB to keep the firmware current.
A: undefined
Q: Will this allow the buttons on the steering wheel to work?
A: This model will retain OnStar and Bluetooth as well as chimes. There is a pre-wired ASWC-1 harness available separately which works with steering wheel controls.