{{Squeaking}} Noise while Driving

Update:

Tonight while driving I played around with the parking brake, pulling it really tight and then driving a few feet with it on. Then releasing and pulling up and releasing. Basically just messing with it. This seems to have resolved the squeak! I think overall my parking brake is weak and I should get it looked at.

I know my rear pads are new and the rotors were turned, per the work order from the dealership that I bought it from.

Thanks again!

The parking brake is a drum brake on the inside of the rear rotor, in case you were unaware. If fooling with the parking brake fixed the squeak then it may have been something that just needed to be cycled from sitting at the dealer.

As scottgas said, drum brakes.
It may be worth a look. There could be a major build-up of brake dust that is causing the squeak. And while you are in there look at the shoes, to see how low they are.
After that, you can at least adjust the brakes to have a better engagement.

@sinat101 curious to see what became of the mysterious squeaking noise. Any update?