Operation CHARM: Car repair manuals for everyone.

Audible Warnings Description and Operation

The BCM sounds the turn signal reminder once per each flash of the turn signal lights when the following conditions are met:
^ The ignition switch is on.
^ The turn signal switch is in either the left turn position or the right turn position (sensing, in the past 2 seconds, a turn signal on signal via the Glass 2 serial data link).
^ The vehicle has traveled a distance of 1.2 km (0.75 mile) by sensing vehicle speed signals via the Class 2 serial data link.

The BCM keeps active the turn signal reminder until one of the following conditions is met:
^ The ignition switch is off.
^ The turn signal switch returns to the off position (sensing, in the past 2 seconds, no turn signal signals via the Class 2 serial data link).