GM Service Manual Online
For 1990-2009 cars only

This feature lets you use your high-beam headlamps to signal a driver in front of you that you want to pass. It works even if your headlamps are in automatic.

To use it, pull the turn signal lever toward you, but not so far that you hear a click.

If your headlamps are in automatic or on low beam, your high-beam headlamps will turn on. They will stay on as long as you hold the lever toward you and the high-beam indicator located on the cluster comes on. Release the lever to return to normal operation.