Q: When backing up, my car makes a rocking noise.

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When backing out of my garage it makes a rocking chair type noise. It's louder in the mornings and only in reverse. It stops when the brakes are applied.

My car has 109000 miles.
My car has an automatic transmission.

The noise is the parking brakes are out of adjustment and the brakes are dragging. Check the rear brakes and see if they are releasing when going in reverse. If you need further assistance with your brake system, then seek out a professional, such as one from Your Mechanic, to help you.

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