Good Maintenance Practices:
- Use only approved fuel for your application.
- Keep the fuel filter changed at required intervals.
ACDelco GM Original Equipment NOx (Nitrogen Oxide) Sensors are exhaust gas sensors that detect the nitrogen oxide content of exhaust from diesel engines, and are GM-recommended replacements for your vehicle's original components. The information from these sensors is used by the engine control module (ECM) to adjust various parameters to help reduce harmful emissions. These original equipment nitrogen oxide 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. A faulty EGR valve will raise the NOx readings at the sensor.
Yes. It will raise emission levels and potentially cause the vehicle to fail an emission test.
GM Part #19330003
ACDelco Part #19330003