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Home >> Hummer >> 2009 >> H3 Alpha >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 5.3L - Introduction >> Repair Instructions >> Mass Airflow Sensor with Intake Air Temperature Sensor Replacement >> Removal Procedure
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Removal Procedure

NOTE: Use care when handling the mass air flow (MAF)/intake air temperature (IAT) sensor. Do not dent, puncture, or otherwise damage the honeycell located at the air inlet end of the MAF/IAT. Do not touch the sensing elements or allow anything including cleaning solvents and lubricants to come in contact with them. Use a small amount of a non-silicone based lubricant, on the air duct only, to aid in installation.
    Fig 1: Engine Wiring Harness Electrical Connector
    GM1897141Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the engine wiring harness electrical connector (1) from the MAF/IAT sensor.
    2. Fig 2: MAF/IAT Sensor Screws
    GM1897143Courtesy of GENERAL MOTORS CORP.
  2. Remove the MAF/IAT sensor screws (1).
  3. Remove the MAF/IAT sensor (2) from the air cleaner upper housing.
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