2008 Buick Lucerne Owner's Manual - Page 150

Cruise Control With cruise control, you can maintain a speed of about 25 mph (40 km/h) or more 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). The cruise control buttons are located on outboard side of the steering wheel. {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 excessive wheel slip, and you could lose control. Do not use cruise control on slippery roads. If your vehicle has the Traction Control System (TCS) and the cruise control is on, TCS will begin to limit wheel spin and the cruise control automatically turns off. See Traction Control System (TCS) on page 4-5. When road conditions allow you to safely use it again, the cruise control can be turned back on. 3-12 T (On/Off): Press this button to turn cruise control on and off. The indicator is lit when cruise control is on. + RES (Resume/Accelerate): Press this button to make the vehicle accelerate or resume to a previously set speed. SET-: Press this button to set the speed or make the vehicle decelerate. [ (Cancel): Press this button to cancel cruise control.