2008 Buick Lucerne Owner's Manual - Page 242

When this light and the SERVICE TRACTION CONTROL message are on, the system will not limit wheel spin. Adjust your driving accordingly. The traction control system automatically comes on whenever you start your vehicle. To limit wheel spin, especially in slippery road conditions, you should always leave the system on. But you can turn the traction control system off if you ever need to. You can turn the system on or off at any time by pressing the traction control system button located on the console or on the end of the column shifter. The DIC will display TRACTION CONTROL OFF when you press the button, and part of the traction control system is disabled. Your vehicle will still have brake-traction control, but will not be able to use the engine speed management system. You may still hear system noises as a result of the brake-traction control coming on. If the controller detects excessive wheel spin in this mode, the traction control system and StabiliTrak® indicator light may blink. It is recommended to leave the system on for normal driving conditions, but it may be necessary to turn the system off if your vehicle is stuck in sand, mud, ice or snow, and you may want to "rock" your vehicle in an attempt to free it. See If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow on page 4-18 for more information. Adding non-dealer/non-retailer accessories can affect your vehicle's performance. See Accessories and Modifications on page 5-3 for more information. 4-6 StabiliTrak® System Your vehicle may have this feature. The StabiliTrak® system is an advanced computer controlled system that helps the driver maintain directional control of the vehicle in difficult driving conditions. This is accomplished by selectively applying any one of the vehicle's brakes and reducing engine power. The StabiliTrak® system comes on automatically whenever you start your vehicle. The system cannot be turned off. The STABILITRAK NOT READY message may be displayed in the DIC and the traction control system and StabiliTrak® warning light on the instrument panel cluster will be on after first driving the vehicle and exceeding 19 mph (30 km/h) for 30 seconds. The StabiliTrak® system is off until the light has turned off. This could take up to 15 minutes. The traction control system and StabiliTrak® warning light on the instrument panel cluster will flash when the system is operating. See Traction Control System (TCS) Warning Light on page 3-40, StabiliTrak® Indicator Light on page 3-41 and DIC Warnings and Messages on page 3-56 for more information. You may also feel or hear the system working. This is normal.