Bringing this thread back up to see if anyone has a solution, im having the same problem. Everything works, but there's no sound.
Thanks for the response, but that didn't work. ughhh lol these stupid cars. I saw it doesn't work after a fuel pump was installed, that's about when mine stopped working too...right after a new pump was installed... weird...I have no idea why this works, but there is a short some where in my car. If I roll up or down the windows in the rear sometimes the sound will come back.
Also try slamming the rear doors. That would do it too. Leave the car on and the radio on and open and close the rear doors.
Yes I know it sounds stupid but it would fix my no sound problem.