my brake pedal is pulsating when I apply pressure. I assume I need a brake job ? on 1993 Chevrolet Lumina

I think it is calipers and rotors in the front and drums and shoes in the rear is there anyway to tell which set is causing the pedal to pulsate ?

Asked by for the 1993 Chevrolet Lumina
1 answer
I believe you have disc brakes on all 4 wheels I would replace front & back rotors & brakes