I looked at a 2005 GTP last night that Ive been considering buying. However at some point prior to the present owner an aftermarket deck got installed (Pioneer). Anyways none of the DIC functions work. You can't change any settings, you cant reset the oil life, your trip mileage, view the date, etc. The owner claims that they were told it was due to the after market radio?
Is this the issue? What would regain the functionality of all of this? I know from what I was told before the only thing that would function is the date display. Is it possible the deck was installed improperly or they didn't use the right adapter? However the door chime seems to work.
