This original equipment ignition knock sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. GMC Sierra 1500 ACDelco Knock Sensor 213-4678 Detonation Sensor Replacement Ignition Knock (Detonation) Sensor ACDelco GM Original Equipment 25201064 GM Original Equipment Knock Sensor Designed as a direct GM-recommended replacement, this sensor plays a crucial role in monitoring engine vibrations caused by irregular air/fuel combustion The sensor creates a voltage signal based on the vibrations caused by erratic air/fuel mixture combustion; the engine control module uses this signal to adjust the ignition timing and air/fuel mixture. The ACDelco 213-4678 Ignition Knock (Detonation) Sensor is designed to detect engine knock or detonation, ensuring optimal engine performance and efficiency An ACDelco GM Original Equipment Ignition Knock (Detonation) Sensor monitors the engine for pinging or spark knock, and is a GM-recommended replacement for your vehicle’s original component.
