[caperj]

When on accessory in garage listening to radio I hear a high pitch hum. Its not too loud but very annoying, anyone else hear this

 

[BigTallV]

Try this same test, but in a different location (i.e. outside of your garage or away from your home). Maybe picking up interference from something in the garage or your home.

Regards,
/BTV

 

[09Enclave]

No, no, no...this is common noise with all the Lambdas, it's been discussed at least a couple places, do a search for it. That high pitched hum is heard whenever the key is in the ACC or ON position, with the engine not running, it's totally normal.

***I'm not really a newbie, I just don't post here....I have over 900 posts on the Enclave forum (kidsenclave), and have some posts on Acadia and Traverse forum.....just wanted you to know I've been around***