va235613.pdf

Here's the .pdf from a 2006 Impala with a GM-LAN system. Notice the PNK #6 going to the RADIO ANTENNA MODULE. Basically I extended 1, 7, 8, & 13 and connected my own speaker to 2 & 9. Hid the OEM radio in the back and put my new deck in the dash tapping 2 & 9 of the harness for my left and 3 & 10 for my right speaker.

 

Very nice thanks for the pdf. It looks like your ideal will work, however I remember that traditionally gm uses pink for ignition even at the deck. I really hope it works