I have a 2004 Chevy Tahoe z71 with the standard Panasonic rear seat entertainment and I am NOT getting any audio through the speakers.I have turned on the DVD player in the back before changing the source on the front control module and all I hear is clicks from the speakers.the DVD player is working and the video is playing on the screen but I do not have any sound through the speakers here are a few photos that I thought might help