Hello, I have a 2008 CTS without navigation. From time to time my radio and ac controls will randomly go black and stop working. Sometimes they will come right back on and other times they will stay off for a day or so then randomly come back on. It started with just the radio but now its the entire panel but the clock, traction control and hazards still work. Now they have all been off for more than a week. I cannot get it to record CDs either, when I push record it looks like its working but then says something about not being able access the HDD while initializing. It also seems like it is losing power or the memory isn't working when the car is off because sometimes when I start it the CD will start at the beginning and not where it left off. I love the car but these Radio/AC Control issues are driving me crazy. Any info will help.

Thanks

 

I had the same issue. The car was still under warranty so I took it to a dealer. They disconnected the battery terminals and shorted them together for thirty seconds. That seemed to fix it. Has happened a couple times since then and I just completed the same procedure and hasn't happened for a couple years now.

 

Just to confirm, did you disconnect both the positive and negative battery terminals and then hold them together for 30 seconds?

 

Nice information