The SPOOLOGIC Mass Air Flow (MAF) Sensor SL-600-032 is a direct-replacement intake air-mass sensor for 2011-2016 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax LML
/ 2010.5-2016 Chevrolet Express GMC Savana 2500 3500 4500 6.6L Duramax LGH equipped with the factory Garrett GT3788VA turbocharger. It reports actual intake air mass to the ECM for precise fueling, timing, EGR control, and limp-mode protection.

This mass air flow (maf) sensor is a brand new direct-replacement unit built to OEM specifications and pre-tested to match the original factory part. It plugs into the factory engine harness and ECM without re-programming or modification — fits the original factory part out of the box, no tuning or piggyback module needed.

Common GT3788VA Mass Air Flow (MAF) Sensor Failure Symptoms

If your 6.6L LGH Duramax, 6.6L LML Duramax truck is showing any of these symptoms, the mass air flow (maf) sensor is most likely the cause:

• Check engine light with P0101, P0102, or P0103 codes — MAF circuit range/performance or low/high input fault
• Black smoke under acceleration — incorrect air mass reading causing the ECM to over-fuel
• Hard starting, rough idle, or stalling — ECM losing accurate intake air data and miscalculating fuel trim
• Reduced fuel economy and power — fueling table errors from a drifting or contaminated MAF reading
• Hesitation, surging, or limp-mode events — intermittent MAF signal causing the ECM to default to safe values

Premium Replacement — Same Quality as Factory OEM

Every SPOOLOGIC mass air flow (maf) sensor is built to OEM electrical and mechanical specifications, pre-tested before shipment, and packaged with a 1-year limited warranty. You get factory-grade fitment and signal accuracy without paying dealer pricing.

What's Included

• (1) Brand new direct-replacement Mass Air Flow (MAF) Sensor

Fits 2010.5-2016 6.6L Duramax LML / 6.6L Duramax LGH

• 2011 – 2016 Chevrolet Silverado GMC Sierra 2500 / 3500 6.6L Duramax LML
• 2010.5 – 2016 Chevrolet Express GMC Savana 2500 / 3500 / 4500 6.6L Duramax LGH

Replaces Factory OEM Mass Air Flow (MAF) Sensor Part Numbers

This part replaces the following factory OEM and aftermarket cross-reference numbers:

• GM OEM: 23259883
• AC Delco / Cross-Reference: 213-4601

1-Year Limited Warranty

This SPOOLOGIC sensor is backed by a 1-year limited warranty against manufacturing defects. Warranty covers replacement of the part only and does not cover labor, consequential damages, or failures caused by improper installation.

Features

• Direct-fit mass air flow (maf) sensor for 2011-2016 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax LML
  / 2010.5-2016 Chevrolet Express GMC Savana 2500 3500 4500 6.6L Duramax LGH
• OEM-compatible — plugs into the factory engine harness with no tuning or piggyback module
• Replaces 213-4601, 23259883
• Brand new — pre-tested to OEM signal and fitment specs
• Backed by a 1-year limited warranty