Good Maintenance Practices:
- Use approved octane fuel for your vehicle.
- Have vehicle serviced if 'Check Engine' light illuminates.
ACDelco GM Original Equipment Ignition Knock (Detonation) Sensors monitor the engine for pinging or spark knock, and are GM-recommended replacements for your vehicle's original components. These sensors create a voltage signal based on the vibrations caused by erratic air/fuel mixture combustion; the engine control module uses these signals to adjust the ignition timing and air/fuel mixture. These original equipment ignition knock sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)
Please visit our warranty page on Gmparts.com for full warranty details.
Yes. With a faulty sensor, there is a chance that higher emissions are being produced from the engine because the engine is running hot.
Yes. Knock is caused by pre-ignition or detonation. If left uncorrected, it can cause possible damage to the motor.
GM Part #12589867
ACDelco Part #213-3521