2003 GMC Sonoma Owner's Manual - Page 134

To signal a lane change, just raise or lower the lever until the arrow startsto flash. Hold it there until you complete your lane change. The lever will return by itself when you release it. As you signal a turn or a lane change, if the arrows don't flash but just stay on, a signal bulb may be burned out and other drivers won't see your turn signal. If a bulb is burned out, replace it to help avoid an accident. If the arrows don't go on at all when you signal a turn, check the fuse (see Fuses and Circuit Breakers on page 5-95 ) and for burned-out bulbs. When the high-beam headlamps are on, this indicator light on the instrument panel cluster will also be on. Flash-To-Pass Feature 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 the automatic position. Turn Signal On Chime If your turn signal is left on for more than 3/4 of a mile (1.2 km), a chime will sound at each flash of the turn signal. To turn off the chime, move the turn signal lever to the off position. To use it, pull the turn signal lever toward you, but not so far that you hear a click. If your headlamps are in the automatic position or on low beam, your high-beam headlamps will turn on. They'll stay on as long as you hold the lever toward you and the high-beam indicator on the dash will come on. Release the lever to return to normal operation. Headlamp High/Low-Beam Changer To change the headlamps from low to high beam or high to low beam, pull the multifunction lever all the way toward you until you hear a click. Then release it. 3-7