2005 Buick Century Owner's Manual - Page 110

Cruise Control If the vehicle has cruise control, a speed of about 25 mph (40 km/h) or more can be maintained without keeping your foot on the accelerator. This can really help on long trips. Cruise control does not work at speeds below about 25 mph (40 km/h). When the brakes are applied, the cruise control shuts off. The cruise control will automatically disengage when the enhanced traction system begins to limit wheel spin. See Enhanced Traction System (ETS) on page 4-9. When road conditions allow, the cruise control can be used again. Setting Cruise Control {CAUTION: {CAUTION: Cruise control can be dangerous where you cannot drive safely at a steady speed. So, do not use your cruise control on winding roads or in heavy traffic. Cruise control can be dangerous on slippery roads. On such roads, fast changes in tire traction can cause needless wheel spinning, and you could lose control. Do not use cruise control on slippery roads. If you leave your cruise control on when you are not using cruise, you might hit a button and go into cruise when you do not want to. You could be startled and even lose control. Keep the cruise control switch off until you want to use cruise control. 3-10