New Old Stock, Part number 13597418 is a genuine General Motors (GM) / Vauxhall / Opel clutch or brake pedal position sensor. Please carefully check your part numbers as this remains the responsibility of the buyer, appreciate you taking time to look. 
Function

Depending on your exact vehicle configuration, this electronic switch monitors the movement or physical position of your foot pedal. It communicates directly with your engine control module (ECM) to: 
Manage the Engine Stop/Start system
Safely disengage cruise control when you press a pedal
Correctly trigger the brake lights


Vehicle Compatibility
This sensor is a standard replacement component for several manual transmission GM and Vauxhall models, primarily manufactured between 2015 and 2020:
Vauxhall/Opel Astra (J and K generations)
Vauxhall/Opel Corsa (D and E variants)
Vauxhall/Opel Adam
Vauxhall/Opel Zafira C
Vauxhall/Opel Viva