Thread: 06 GXP complete new system

I want to completley remove the factory monsoon system including the amp. I am going to install a new HU all new speakers front and rear and two subs. I am going to install 2 amps one for the speakers and one for subs. Does anyonw know if I have to use a GM harness adaptor to keep my chimes and steering wheel contols or since I want to replace everthing if I can just rig the radio so it works. Also does anyone know if I can still have the dash speaker work.