I have a 2000 Suburban LS with the premium sound system. It's not Bose but its better then the orignal speakers i guess. It has a amp under the glove box for the factory subwoofer. I disconnected that sub because i put Alpines in the back. I just installed a new head unit, a Kenwood with bluetooth. everything is installed correctly. The radio works, but CD and Bluetooth dont. Everything we have tried wont work. My factory head unit had a accessory plug in for the tape player and such, and we linked all those into the new head unit and still no luck. Is there anybody with good audio knowledge who can help me out? PLEASE and thank you