SPOOLOGIC Mass Air Flow (MAF) Sensor

The SPOOLOGIC SL-600-031 Mass Air Flow Sensor is designed for the listed 2007.5–2010 Chevrolet and GMC applications with the 6.6L Duramax LMM. It supplies the airflow feedback the engine controller uses to evaluate fresh-air delivery and air-system operation.

Features

• Brand-new mass air flow sensor
• Measures filtered intake air mass
• Factory-style electrical connection and mounting
• Provides airflow feedback to the original engine-management system

What's Included

• 1 SPOOLOGIC Mass Air Flow Sensor — SL-600-031

Fitment

• 2007.5-2010 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax LMM
• 2007.5-2008 Chevrolet Express GMC Savana 2500 3500 6.6L Duramax LMM
• 2009-2010 Chevrolet Express GMC Savana 2500 3500 4500 6.6L Duramax LMM

MAF Sensor Operation

The LMM ECM compares measured airflow with calculated airflow to monitor the intake and EGR systems. GM diagnostic guidance identifies air leaks as a possible cause of P0101, so a performance fault should not trigger automatic MAF replacement.

Common MAF Sensor Fault Codes

• P0101: MAF range/performance; inspect the complete air path as well as the sensor.
• P0102 / P0103: MAF circuit low/high input; check supply, ground, signal integrity, and terminal contact.

Code availability varies by model year and calibration. A stored code identifies a condition to diagnose; it does not prove the component has failed.

Diagnose Before Replacing

Inspect the air filter, airbox seal, sensor connector, and intake ducting before replacement. Check for damaged terminals, wiring rub-through, oil contamination, and leaks downstream of the MAF. Compare live airflow with engine speed, load, boost, and EGR command instead of judging the sensor from a single idle reading. Check the charge-air plumbing and EGR sealing when live airflow does not match the modeled value. Interpret any air-leak-equivalency data using the LMM procedure; LML interpretation is different.

Installation Notes

Switch the ignition off before disconnecting the sensor. Keep the sensing element clean and untouched, install it in the correct airflow orientation, and seal the intake connections. After the repair, clear stored faults and complete any model-specific adaptation or verification procedure.

OEM Cross-References

• GM: 98002762
• ACDelco: 213-3856 / 2133856

1-Year Limited Warranty — No Returns

This SPOOLOGIC electrical component is covered by a 1-Year Limited Warranty against defects in materials and workmanship. Electrical components are non-returnable. Warranty claims require prior authorization and return of the component for inspection. See the SPOOLOGIC Warranty Policy for coverage, exclusions, and claim procedures.