1993 Pontiac Grand Prix Owner's Manual - Page 104

1 Anti-Lock Brake System Warning Light (OPTION) With anti-lock,this light will goon when you start your engineand it will stay on for three seconds. That's normal. If the light doesn't come on, have it fixed it will be ready to warn so you if there is a problem. If the light stays on or comes when on you're driving, stop as soon as possible and turn thekey off. Then start the engine to reset the system. If the light still stayson, or comeson again while you're driving, your Pontiac needs service. Unlessthe regular brake system warning lightis also on, you will still have brakes,but not anti-lockbrakes. If the regular brake system warning light is also on, see theIndex under Brake System Warning Light. If the anti-lock brake system warning light everflashes, your anti-lock brake system is still working needs service but as soon as possible.