where is the switch commutateur interruptor located on the car so i can repair it on 1997 Saturn SL2

i took the care to autozone and they told me that my switch communateue interruptor need to be repalced i purchased it and can't fin where to locate it on my Saturn SL2 1997.

help me please

Asked by for the 1997 Saturn SL2
These are not really valid terms. Do they mean the Crank Shaft Sensor or Interruptor? What was the code number and what is your car doing improperly?
no they mean the Switch Commutateur Interruptor which is the brake light switch located above the brake pedal if you follow the pedal upwards, you will see it but my question is how do I remove the old one to install the new one?