2003 Pontiac Bonneville Owner's Manual - Page 158

Anti-Lock Brake System Warning Light The anti-lock brake system warning light will come on briefly when you turn the ignition key to ON.This is normal. If the light doesn't come on then, have it fixed so it will be ready to warn you if there is a problem. ANTILOCK United States Canada Traction Control System (TCS) Warning Light For vehicles equipped with the traction control system, this warning light should come on briefly when the engine is started. With the anti-lock brake system, the light(s) will come on when your engine is starled and x 2 y stay on for several seconds. That's normal. TRAC OFF If the light stays on, turn the ignition to OFF. Or, if the light comes on when you're 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're driving, your vehicle needs service. If the regular brake system warning light isn't on, you still have brakes, but you don't have anti-lock brakes. Ifthe regular brake system warning light is also on, you don't have anti-lock brakes and there's a problem with your regular brakes. See Brake System Warning Light on page 3-42. If the warning light doesn't come on then, have it fixed so it will be ready to warn you if there's a problem. If it stays on, or comes on when you're 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. 3-43