AM radio channels have stopped working. All FM and Sirius channels work except AM. No noise or static ...
Any ideas of where to start troubleshooting would be helpful.

 

If there is the slightest antenna problem, it will usually affect AM reception, I would start with checking the antenna and mounting., if external.

Sometimes car washes can mess up antennas and reception.
When you switch to AM , what do you get?

 

Literally, here nothing ....no static , like if radio is not even on...All other stations work fine.

 

That would lead us to believe the switch that changes from AM-FM-FM stereo. That will require someone to get inside the radio to verify this.

 

Thank you much , appreciate the follow-up and response. I will definitely look into this.