1999 Oldsmobile Alero Owner's Manual - Page 117
1999 Oldsmobile Alero Manual
Page 117 highlights
yellowblue Anti-Lock Brake System Warning Light CAUTION: Your brake system may not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to an accident. If the light is still on after you've pulled off the road and stopped carefully, have the vehicle towed for service. When the ignition is on, the brake system warning light will also come on when you set your parking brake. The light will stay on if your parking brake doesn't release fully. If it stays on after your parking brake is fully released, it means you have a brake problem. United States Canada 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. 2-57