Pedal Pulsation
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Some pedal pulsation may be felt during ABS activation.
Pedal pulsation is caused by components that are loose, or beyond tolerance limits. The primary cause of pulsation are disc brake rotors with excessive lateral runout or thickness variation, or out of round brake drums. Other causes are loose wheel bearing or calipers and worn, damaged tires.