2005 Cadillac DeVille Owner's Manual - Page 164

Anti-Lock Brake System Warning Light With the anti-lock brake system, the light(s) will come on when your engine is started and may stay on for several seconds. That is normal. Traction Control System (TCS) Warning Light United States If the light stays on, turn the ignition to OFF. Or, if the light comes on when you are driving, stop as soon as possible and turn the ignition off. Then start the engine again to reset the system. If the 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 anti-lock brakes. If the regular brake system warning light is also on, you do not have anti-lock brakes and there is a problem with your regular brakes. See Brake System Warning and Parking Brake Indicator Light on page 3-47. The anti-lock brake system warning light should come on briefly when you turn the ignition key to ON. If the light does not come on then, have it fixed so it will be ready to warn you if there is a problem. 3-48 Canada (Analog Only) This warning light should come on briefly when the engine is started. 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, there may be a problem with your traction control system and your vehicle may need service. When this warning light is on, the system will not limit wheel spin. Adjust your driving accordingly.