I would ask them to check the volume level on the os2 first as there is an adjustment on it. If the level is too high is could cause your feedback. Second, make sure they are aware of the service bulletin for the os2 about connecting all the purple class II data wires together at the harness (available on pac site). I believe that it is also possible that the os2 is shutting off power to the D1 when onstar enabled instead of muting it--can't rember off the top of my head, but I think the D1 has a yellow/black wire that is the mute wire and should be used in conjuction w/ the brown wire on the os2. Good Luck!
__________________
\'05 Slate Blue Sut w/ Magnusun, JBA headers, custom exhaust, 22\" MC2 RT5 wheels, Pioneer AVIC Z1 nav, Passport SRX, Vizualogic A1000 dual, bi xenons, fog xenons, dual optimas, and just gettin\' started!
|