Buick Excelle Cadillac SRX Brake Light Switch 13597418 Replacement for 25889337

This brake light switch is designed for 2010–2015 Buick Excelle GT/Verano (1.6L/1.8L) and 2004–2009 Cadillac SRX (3.6L/4.6L); directly replaces OEM 25889337. It controls brake lights and sends braking signals to the engine control module (ECM), affecting cruise control release and gear shift lock functions. OEM 13597418 ensures perfect compatibility with vehicle harness and mounting holes. Replacement is straightforward: disconnect battery negative, use a 10 mm socket to remove; few models may also require checking the brake pedal cushion for wear to avoid switch travel issues.