SATURN BRAKE PULSATE

Hello I Have A 2001 Saturn L300 With 178,000 Km On It. It Had Weak Braking Power And A Rhythmic Grinding Noise But No Pedal Pulse. It Wasn't...

Twice Now, While Driving, My Car Starts Braking On Its Own. When It Does, The Brakes Are Pulsing As If I'm Pumping The Brake Pedal...