Joe

Jack the car up take the ebrake off and grab the tire from both ends and see if it has any play in it. I had the same sounds when I had the LVL 5 fiasco going on. It was the wheel bearings/hubs. How may miles are on the car?

Did this noise start after the brake install or prior?

I parking brake is pretty simple on these cars. It is either a cable problem or in the self adjusting handle. I would take a look at things on jack stands again. Make sure their is no air in the lines also.