If you do aftermarket head unit installations, you know the Axxess Integrate line of products from Metra is excellent. The Data Interface with SWC for 2000 to 2013 GMs provides accessory power as well as retains RAP, chimes, audio controls on the steering wheel and the factory auxiliary input. It also retains OnStar and the OE Bluetooth. It is for use in nonamplified models or analog/digital amplified models.