Park Brake Warning

The instrument panel cluster (IPC) activates the park brake audible warning as requested by the body control module (BCM). The BCM sends a class 2 message to the IPC. The park brake warning sounds and the BRAKE indicator illuminates when the following occurs:

• The ignition is ON.
• The vehicle speed is greater than 5 km/h (3.1 mph). The BCM receives a class 2 message from the engine control module (ECM)/powertrain control module (PCM) indicating the vehicle speed.
• The BCM determines that the park brake is engaged and the signal circuit is low.