An electronically controlled throttle found on many modern General Motors LS-based engines replaces the traditional mechanical linkage between the accelerator pedal and the throttle plate. This system uses sensors to monitor pedal position and other engine parameters, then actuates an electric motor to control airflow into the engine.
This electronic control offers several advantages, including improved engine response, enhanced fuel efficiency, and more precise control over idle speed and other engine functions. It also plays a crucial role in enabling advanced features such as traction control, stability control, and cruise control. Replacing the direct mechanical connection with electronic control represents a significant shift in engine management technology, moving away from simpler cable-operated systems.