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HOMESERVICE MANUALSCHEVROLET2014EXPRESS 2500 BASE, VAN CARGO, 6.6L ENG VIN LREPAIR AND DIAGNOSISENGINE PERFORMANCETUNE-UPENGINE CONTROLS AND FUEL - 6.6L (LGH) - REPAIR INSTRUCTIONSREPAIR INSTRUCTIONSNITROGEN OXIDE SENSOR REPLACEMENT - POSITION 2
2014 Chevrolet Express 2500 Base, Van Cargo, 6.6L Eng VIN L

Nitrogen Oxide Sensor Replacement - Position 2

2014 Chevrolet Express 2500 Base, Van Cargo, 6.6L Eng VIN LSECTION Nitrogen Oxide Sensor Replacement - Position 2
Fig 1: Nitrogen Oxide Sensor - Position 2
GM2374136Courtesy of GENERAL MOTORS COMPANY
Nitrogen Oxide Sensor Replacement - Position 2

Callout Component Name
Preliminary Procedure 
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1 Nitrogen Oxide Sensor
CAUTION:

Refer to Fastener Caution .


Procedure 
If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants and Sealers .
Tighten 
45 N.m (33 lb ft)
2 Nitrogen Oxide Sensor Module Fastener (Qty: 2)
Tighten 
10 N.m (89 lb in)
3 Nitrogen Oxide Sensor Module
Procedure 
Raise the nitrogen oxide sensor and module from the vehicle.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.