Turn Signal On Warning

The instrument panel cluster (IPC) activates the turn signal audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the IPC indicating the chime frequency (single chime in phase with turn signal indicator) and duration (continuous). The turn signal on warning sounds when the following occurs:

• The ignition is ON.
• The BCM detects that the turn signal is active for greater than 1.2 km (0.75 mi). The BCM calculates the distance based on a class 2 message from the engine control module (ECM) indicating the vehicle speed.