Fitment

Fits for:

• General Motors Diesel Engine Applications
• Chevrolet Silverado Diesel Models (selected years)
• GMC Sierra Diesel Models (selected years)
• 6.6L Duramax L5P equipped vehicles (where applicable)
• Position: Exhaust system NOx monitoring (upstream/downstream depending on configuration)
• Replacement OE Number: 12676703
• Emissions System: SCR / DEF emissions control system

FAQ

Q1: What does this NOx sensor do?
A1: It measures nitrogen oxide levels in the exhaust to support emissions control system operation.

Q2: Where is this sensor installed?
A2: It is installed in the exhaust system, typically before or after the SCR catalyst depending on vehicle configuration.

Q3: Is this the same for all GM diesel models?
A3: No, application depends on engine and emissions system layout. OE number matching is required.

Q4: What are symptoms of a failing NOx sensor?
A4: Possible emissions system warnings and incorrect exhaust gas readings detected by the control module.