Parking Brake Release Motor: Service and Repair
The vacuum power unit will release the parking brake automatically when the transmission selector lever is moved into any driving position with the engine running. The brakes will not release automatically, however, when the selector lever is in neutral or park position with the engine running, or in any other position with the engine off.
The lower end of the release handle extends out for alternate manual release in the event of vacuum power failure or for optional manual release at any time.