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  1. Brake pulsating after parking brake actuation

    Problems, Driver Warnings or DTCs - Chevy Volt
    I am a new owner of a used 2012 Volt. After I actuate the parking brake, and release the service brake pedal, I hear a pulsating sound at a frequency of roughly once a second. The pulsating stops when I re depress the service brake pedal. Is this normal? If not, any ideas of cause? Thanks.