I believe the brake light/pedal is connected to the shifter electronically. You can't take the car out of park unless your foot is on the brake. The brake lights do not come on unless the ignition switch is turned on. Once the brake lights work, the car can be moved out of park. It follows the lock out is tied electrically somehow and the brake light switch makes sense. Are your brake lights working if no it's probably the switch, if yes its probably in the shifter somewhere, or the wiring to the shifter. Just my conclusion. Haven't checked schematics, and won't. I hate schematics, too hard on my eyes.