I have had my pioneer sirius tuner hooked up to my D2 for a few years and no problems. Now For the past few months the music would stop, I change the channel and it says invaild channel. So I unplug it and plug it back and it works. It would do this maybe once a day or so. Now it just says Sirius on the top of the screen and nothing. I have unplugged it and checked all of the wires. Sirius says it is Pioneers issue. So, Do I have to buy the newest tuner? Will that work with my unit? Thanks for your help!