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I have three 1997 Olds Cutlass's. They do it to! Nothing to worry about. They will do that in response to a bump, or washboard road driven over at a certain speed. The wheel speed sensor on each wheel tells the computer how fast each wheel is turning. If one wheel speed is faster than the other three, as when you hit a bump, the computer thinks it is loosing traction and flashes the light, and may or may not engage the ABS system to even up the speed on all four wheels.
Now if that light comes on, and STAYS on, that is another matter. It will only do that if a wheel speed sensor becomes faulty, and then the ABS light will override the traction light.
It's most likely going to be the wheel speed sensor which is located at the wheel bearing. when they become disconnected or the wire breaks your abs and traction light will come on and something your check engine light.
An ABS sensor DOES affect the traction control system. Traction control uses these sensors to determine if a wheel is losing traction. A bad sensor will cause both the ABS and TRACTION lights to come on.
The CHECK ENGINE light however is going to be a seperate problem.