Fitment Level: OE Match / Platform Verified

Compatible with GM diesel emission aftertreatment systems using OEM references:

• 12655962
• 12662647 (supersession)
• 12661098 (related earlier revision in same sensor family)

Typical applications include:

• Chevrolet Cruze 2.0 Diesel (Gen 1 diesel models)
• GM small/medium diesel platforms with DPF soot monitoring systems
• Selected export diesel configurations using Bosch PM sensor architecture

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 breakthrough or filter degradation
• optimize regeneration timing
• support emissions compliance and fault detection (P24AE / P24AF-type faults)

⚠️ 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 diesel emission control strategy and regeneration logic.

Fitment must always be confirmed strictly by OEM number (12655962), as GM frequently supersedes this sensor (notably to 12662647) depending on model year and calibration updates.