ACDelco GM Original Equipment Cruise Control Governor Control Modules are part of the cruise control system, and are GM-recommended replacements for your vehicle’s original components. The cruise control module is designed to obtain and hold any desired vehicle cruise speed above a minimum speed of 40 km/h (25 mph). Two components within the module help achieve this function. One component is an electronic controller that monitors the vehicle speed, cruise control switch inputs, cruise control release, and the brake switch inputs, and operates the electric stepper motor. The other component is the stepper motor, which moves an internal band (linked to the throttle lever via the cruise control cable) in response to the controller in order to maintain the desired cruise speed. These original equipment cruise control governor Control Modules have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.