[cederholm]

Okay, here's an update as I know you've been losing sleep. I found the issue and I'm updating the post as it might be helpful to someone.

The strange noise was absolutely coming from the front passenger's side, so of course the issue was in the rear diver's side. A broken anti-rattle spring on the e-brake.

I only did a short test drive with a band-aid repair job. but the sounds was gone so I'm fairly confident I've found the issue. Proper part on order.

Thanks all,
Carl