Can any assit with explaining why the Z1 plays music for a bit, then it goes slient. FYI...I am using the a GMOS4 II. This is the adapter for Bose factory unit and onstar system. Any ideas why I lose sound whether it be the radio, XM, cd/dvd, or even my ipod?

I would focus on the GMOS4 II not the Z1. I would guess that the problem would be with that device.

OK gotcha. GMOS4 II is my second one. I had the D3 at first but I sent it back along with the first GMOS4 II. I had problems with that one at first, this is why I got the Z1 and asked crutchfield to send me a replacement GMOS4 II.

Is Metra the only vendor who offers the bose adapter (GMOS4 II)?