No voltage on radio accessory wire

[Justmealso]

The radio in my 2009 Silverado quite and there is no voltage on the accessory wire with the key on. I have the accessory fuses and they are good. Don’t know what to check next. Any help will be appreciated.

[Joe X]

As it turns out there is more than one fuse blocks, take a look at this:

 

https://imgvehicle.com/chevrolet/silverado-ii/fuse-box

 

[Justmealso]

I found the location for more radio fuses and checked them. All were good. I rechecked the voltage on the accessory radio harness and to my surprise it was 12V.

Reinstalled radio and it is working. I have no explanation why the accessory can back to live. I think there is still a problem somewhere and it will happen again.

Is there anything else I should check that might be related to this issue.

[Dafaseles]

There could have just been a loose fuse, and when you checked them, you fixed the problem. Sometimes, it's just that easy. 

[Joe X]

On 3/6/2022 at 10:26 AM, Justmealso said:

I found the location for more radio fuses and checked them. All were good. I rechecked the voltage on the accessory radio harness and to my surprise it was 12V.

Reinstalled radio and it is working. I have no explanation why the accessory can back to live. I think there is still a problem somewhere and it will happen again.

Is there anything else I should check that might be related to this issue.

 

In the last fuse block you checked remove each audio relevant fuse one at a time until you reproduce the fault you had, if you can find it, you can take a closer look, replace the fuse or thoroughly check it and clean and tighten the fuse socket.