Pioneer AVIC/Steering Control problem

[xonxoff]

I just installed a Pioneer AVIC-N1, Pioneer CD-IB100 Ipod adapter, Pioneer GEX=910XM and a Soundgate REMPIDGM dIGISTAR-x v2 Steering wheel control in my 04 H2. It works great except for the control of the Onstar. When I try to avtivate the Onstar from the wheel, the stereo goes into ATT mode. I cannot control the volume of the Onstar. Do any of you have these components. Any of these problems? Know of a better steering wheel control? I have checked the dip switches and they seem to be correct. The only other thing I lost was the chime for driver memory set.