2009 Buick LaCrosse Owner's Manual - Page 166

Reduced Engine Power Light If the reduced engine power light is on, a chime will sound and a noticeable reduction in the vehicle's performance may occur. Highbeam On Light This light comes on when the high-beam headlamps are in use. If the reduced engine power light is on, but there is no reduction in performance, proceed to your destination. The performance may be reduced the next time the vehicle is driven. The vehicle may be driven at a reduced speed while the reduced engine power light is on, but acceleration and speed may be reduced. Anytime the reduced engine power light stays on, the vehicle should be taken to an authorized GM dealer/retailer as soon as possible for service. See Headlamp High/Low-Beam Changer on page 3-8 for more information. Headlamps Suggested Light This light will come on when the use of headlamps is suggested. 3-44