GM Genuine Parts Nitrogen Oxides Sensor (Position 2)
OE
Pack of 1

GM Genuine Parts Nitrogen Oxides Sensor (Position 2)

GM Part #12741485

ACDelco Part #12741485

MSRP$332.20*

GM Genuine Parts Nitrogen Oxide (NOx) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Helps provide precise measurement of the exhaust NOx content
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors

Pack of 1

About this product

GM Genuine Parts Nitrogen Oxide (NOx) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. NOx (Nitrogen Oxide) Sensors are exhaust gas sensors that detect the nitrogen oxide (NOx) content of the exhaust from diesel engines. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Helps provide precise measurement of the exhaust NOx content
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Product Specifications

Connector GenderMale Female
Universal Or Specific FitSpecific
Terminal Quantity6
Connector ShapeOval
ClassificationOE
Wire Harness Length31.6 in / 802.7 mm
Terminal TypeBlade Pin
Terminal GenderMale
Voltage12DC

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.

Before purchasing and installing a nitrogen oxide (NOx) sensor, make sure it is the correct fit for your vehicle

  • Use only approved fuel for your application
  • Keep fuel filter changed at required intervals
  • Regularly inspect nitrogen oxide (NOx) sensors for signs of damage or wear, and replace them if signs of damage are found

Signs of wear for nitrogen oxide (NOx) sensors include but are not limited to:

  • Check engine light illuminated
  • Hard or no start of engine
  • Poor engine idle

ModelBody StyleTrimYear(s)
Silverado 4500 HD2019, 2020
Silverado 5500 HD2019, 2020
Silverado 6500 HD2019, 2020

Frequently Asked Questions

Yes, always consult the Vehicle Owner's manual or an expert technician before making any repairs or adjustments.

Yes, a faulty EGR valve will raise the NOx readings at the sensor.