I have 97 4-door blazer and for the past month the ABS light keeps coming on, it will stay on most of the time but sometimes dissappear for a while.

At first the were was no noticable difference in brakeing at all but now at very low speeds I am having some issues where it feels like it locks up or pulsates but only at the lower speeds.

The brakes are fairly new, anyone know what is going on?

 

Sounds to me like you have a dirty wheel speed sensor. You can remove the sensor and clean the reluctor ring inside.