WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Brake Pedal Position Sensor
Circuit
Short to Ground
Open
Short to Voltage
Operating Conditions:
Ignition = On Parameter Normal Range:
0.25 to 4.75 V