ABS light on 2006 Chevrolet Equinox

Why does my ABS light comes on and my brakes work fine, then the light goes off and my left front brake grabs.

2 answers
Well, the ABS light will commonly come on because of a problem with the wheel speed sensors. This, however, would not explain the behavior of your left front brake.

If this is not intermittent, I'd take the car to a shop and reproduce the behavior for a technician. Also, here's more information on the ABS warning light: http://repairpal.com/abs-warning-light
Low Brake Fluid