Park Brake Warning

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

The radio activates the park brake audible warning as requested by the body control module (BCM). The BCM sends a class 2 message to the radio indicating the chime frequency of a fast rate and a continuous duration. 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 PCM indicating the vehicle speed.
The BCM determines that the park brake is engaged and the signal circuit is low.