It WORKED!! So thankful that you posted this!

I hope I’m posting correctly bc this is something I never do, but your 9 year old post helped me and I knew I had to figure this out to thank you.

Backdrop: I last drove my car on Friday prior to Presidents Day and everything was fine. Didn’t drive it again till Tuesday morning since I was off Monday for the holiday. Battery was dead. Got my friend to jumpstart my car and while it started without any problems, I was without my radio, parking assist, and no signal sound. At first I was researching about no radio and there was anti theft deterrent feedback and I needed a radio code feedback. Called dealership and they wanted me to come in for a diagnostics. Not how I roll either. Lol. Not for this issue as I paid off my Camaro (2015) in December.

To make this short, thankfully I finally ran across your post (after 2 weeks of no radio,,etc), and asked my friend to disconnect the battery. 15 minutes later, I had a radio, parking assist, and even the signal sound that I used to think was annoying!

Thank you so much for sharing your knowledge!!!!

 

I am having the same issue on my 2011 Chevy equinox my radio screen also has line and random shapes across it I have tried removing cables, resetting the computer, resetting the radio altogether, checked all fuses and none of this has worked any ideas will help I see this is a common problem but can’t find any solution

 

So for a couple years now I've been dealing with this same issue. Its frustrating that the best solution so far is to disconnect the battery for a period of time. Especially when that might resolve it for the day, or you might not see it again for a few months! It just popped up for me again recently so I checked back here and at least there is still a good group of people keeping others informed. I replaced my radio years ago prior to this happening, and thats when I learned that the turn signal sound comes from the stereo. I had no idea!

I saw someone in this thread tried replacing the car battery and had some success there. Has anyone else tried that? Could it be an indication that the battery is wearing down?

 

Can't believe I found this thread. I'm having the same issue with a brand new 2023 Yukon. I hardwired a dashcam today using a fuse adapter that came with it. I chose the heated steering wheel fuse because it's a VCC fuse. After I finished I noticed I had no stereo, park assist or OnStar. I've completely disconnected the battery twice with no luck. Heated steering wheel works, lol. I've checked the stereo module fuse several times as well. No issue there. I'm completely at a loss at this point. This makes no sense. Any additional advice would be greatly appreciated.

 

I am having the same problems ie stereo, sounds, and service park assist. Did replacing the BCM resolve any of your issues?
Debating trying that next. Thank you