Buy 2009 Chevrolet Express 3500 Mass Air Flow Sensor. Mass Air Flow Sensor - Repair or Replace If the Spec, TWIN-TURBO, PZEV - OEM Chevrolet Part # 23262343 (20787043, 23118170)

Sensor. Mass. Air.
Exc.PZEV Spec. Incl.Seal. Mass Air Flow Sensor. PZEV Spec. ULEV Spec. Assembly - Flow. Humidity. Pressure. Included with: Air cleaner Assembly, Connector tube.

Mass Air Flow Sensor

Mass Air Flow Sensor - Repair or Replace
If the mass air flow sensor or MAF meter in your 2009 Chevrolet Express 3500 is failing, you’ll notice in addition to the check engine light that your engine may crank and not start, or that the engine speed surges at idle.