AM radio noise

[etnrice]

I have REALLY bad electrical noise (not a whine but more like the aliens are in there somewhere ) ONLY when listening to AM radio. I've changed head units and checked grounds. Don't know what to do next. Any ideas?

 

[turbopete]

What about this?

I have the same problem in my Silverado. Is the A/C fan on? I found out the windings in the fan are bad, causing the electrical noise.

 

[etnrice]

NO difference if AC is on or off. Makes more, different sounds (very alien like ) when I touch the brakes or turn signals ect.

 

["Turbo-T"]

It's some sort of electrical interference for sure. I have the same problem in my S-10 truck with the CB radio which operates off of the AM band on a much lower frequency. I too have been fighting this issue.