2002 Pontiac Grand Prix- Grunts

My ABS grunts when I start to drive and today I was COMMING to a red light and my brake pedal pushed my foot up while it is grunting very loud, and hard to push the pedal down to stop the car, what could the problem be.

Were you driving on a wet road or a road with a loose surface when this happened? If so, what’s the condition of your tires?

Lots of things can cause that. A good mechanic with a scan tool can watch what happens when this occurs so they can fix the problem. I can’t give you a sliver bullet over the interwebs that just magically fixes this.