1998 Buick Park Avenue Owner's Manual - Page 102

... pane! will flash in the direction cf the turn OF lane change. Hf your vehicle is equipped with the Head-Up Display (HUD), an m o w will also a p e x in the display area to indicate the directim of the turn or lane change. v The turn signal has two upward (for right) and two downward (for left) positions. These pcsitions aIbw you to signal a turn or m. Iarae change. To signal a m r n , move the lever all the way up or down. Wnen the turn is h i s h e d , the lever will return automatically.