Hi Jimbo,
It sounds like the amplifier inside the radio has gone out was means you need to replace the radio. But it could also be the APIM (accessory interface protocol module) in this case I would do a CAN scan to see which one is having an issue this is easy to do and you can get a CAN scanner from Amazon for about $30.00 here is a video to show you how.
https://youtu.be/u-4syLc-ifQ
Here is a scanner link:
https://amzn.to/3o41KcZ
Here are the radio wiring diagrams for your car in the images below so you can see how the system works. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Monday, August 15th, 2022 AT 10:22 AM