Hi all- I've searched forums for hours to get some help on this issue, but can't find anything that matches my problem. My stereo has sounded great since the day I bought my GX, and about a year ago I installed a GROM unit to add Bluetooth. It's all been working perfectly until a week ago when suddenly all of the audio options (FM, AM, Disc, Tape) sound terrible. It reminds me of listening to a radio station that isn't quite tuned- not static, but "garbled". I've use the system check and there's no error on the amp (my first guess), but I do have an error 61-40 on the h/u. Can't seem to find what that means. Anyone out there have a suggestion on how I might resolve? I can upload an audio file if that helps. Thx in advance.