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.

Product Features:

• This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
• Detects the nitrogen oxide content of the exhaust to help optimize emissions
• GM-recommended replacement part for your GM vehicle's original factory component
• Offering the quality, reliability, and durability of GM OE
• Manufactured to GM OE specification for fit, form, and function