1999 Pontiac Grand Prix Owner's Manual - Page 133

yellowblue Anti-Lock Brake System Warning Light With the anti-lock brake system, this light will come on when you start your engine and it will stay on for three seconds. That's normal. If the anti-lock brake system warning light stays on longer than normal after you've started your engine, turn the ignition off. Or, if the light comes on and stays 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 light is on and the regular brake system warning light isn't on, you still have brakes, but you don't have anti-lock brakes. Adjust your driving accordingly. The anti-lock brake system warning light should come on briefly when you turn the ignition key to RUN. If the light doesn't come on then, have it fixed so it will be ready to warn you if there is a problem. Traction Control System Warning Light (3800 Supercharged V6 Engine Only) The traction control system warning light may come on for the following reasons: D If you turn the system off by pressing the TCS button located on the far right hand side of the Driver Information Center, the warning light will come on and stay on. To turn the system back on, press the button again. The warning light should go off. (See "Traction Control System" in the Index for more information.) D If there's a brake system problem that is specifically related to traction control, the traction control system will turn off and the warning light will come on. If your brakes begin to overheat, the traction control system will turn off and the warning light will come on until your brakes cool down. If the traction control system warning light comes on and stays on for an extended period of time when the system is turned on, your vehicle needs service. 2-73