2005 GMC Savana Van Owner's Manual - Page 152

Reduced Engine Power Light If the check engine and reduced engine power lights are on, the throttle may be disabled and a noticeable reduction in the vehicle's performance may occur. 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 check engine light stays on, the vehicle should be taken to an authorized GM dealer as soon as possible for service. Highbeam On Light This light will illuminate when the headlamp high beams are in use. See Headlamp High/Low-Beam Changer on page 3-9. Daytime Running Lamps (DRL) Indicator Light You have this light on the instrument panel. It will light whenever the DRL are on. It is also a reminder to turn on your headlamps when driving at night. 3-38