2008 Buick Lucerne Owner's Manual - Page 178

Antilock Brake System Warning Light For vehicles with the Antilock Brake System (ABS), this light will come on briefly when you start the engine. Traction Control System (TCS) Warning Light This warning light should come on briefly when the engine is started. That is normal. If the light does not come on then, have it fixed so it will be ready to warn you if there is a problem. If the ABS light stays on, turn the ignition off, if the light comes on when you are driving, stop as soon as it is safely possible and turn the ignition off. Then start the engine again to reset the system. If the ABS light still stays on, or comes on again while you are driving, your vehicle needs service. If the regular brake system warning light is not on, you still have brakes, but you do not have antilock brakes. If the regular brake system warning light is also on, you do not have antilock brakes and there is a problem with your regular brakes. See Brake System Warning Light on page 3-39 For vehicles with a Driver Information Center (DIC), see DIC Warnings and Messages on page 3-56 for all brake related DIC messages. 3-40 If the warning light does not come on then, have it fixed so it will be ready to warn you if there is a problem. If it stays on, or comes on when you are driving a SERVICE TRACTION CONTROL message will appear in the Driver Information Center (DIC). This indicates that there may be a problem with your traction control system and your vehicle may need service. When this warning light is on and the SERVICE TRACTION CONTROL message appears on the DIC, the system will not limit wheel spin. Adjust your driving accordingly.