Fitment Level: OE Match / Platform Verified

Compatible with GM diesel emission aftertreatment systems using OEM references:

• 12667010
• ACDelco GM Original Equipment equivalent (same OE part family)
• Bosch PM sensor family (Duramax HD emission architecture dependent, calibration-specific)

Typical applications include:

• Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax diesel
• GMC Sierra 2500HD / 3500HD 6.6L Duramax diesel
• Chevrolet Express / GMC Savana diesel vans (selected configurations)
• GM heavy-duty diesel platforms using DPF soot monitoring systems

This sensor is used in diesel particulate matter monitoring systems, where it measures soot concentration downstream of the diesel particulate filter (DPF). The ECU uses this signal to:

• verify DPF regeneration efficiency
• detect soot slip or filter degradation
• control regeneration frequency and strategy
• support emissions compliance and onboard diagnostics

⚠️ Important:
This is a DPF particulate matter (PM) sensor, not a NOx or pressure sensor.
It directly measures soot concentration after the DPF and is critical for GM Duramax HD emission control and regeneration logic.

Fitment must always be confirmed strictly by OEM number (12667010), as GM heavy-duty platforms vary by engine generation (L5P/LML-related architectures) and calibration updates.