Gen1 Wheels, Tires, Brakes, & Suspension
2012 Cruze Eco 60k miles.
I started hearing a new whirring noise from under the hood.
With the help of a friend, I tracked the noise down to the Brake Assist Pump. It seems to start running when I turn ignition to ON. It stops after engine starts. When I pump on the brake, I can hear it...