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Home >> Buick >> 2011 >> Lucerne Super >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 4.6L - Repair Instructions >> Repair Instructions >> Mass Airflow Sensor with Intake Air Temperature Sensor Replacement >> Removal Procedure
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Removal Procedure

CAUTION:
  • Handle the MAF sensor carefully.
  • Do not drop the MAF sensor in order to prevent damage to the MAF sensor.
  • Do not damage the screen located on the air inlet end of the MAF.
  • Do not touch the sensing elements.
  • Do not allow solvents and lubricants to come in contact with the sensing elements.
  • Use a small amount of a soap based solution in order to aid in the installation.
    Fig 1: Locating MAF/IAT Sensor Connector
    GM1670786Courtesy of GENERAL MOTORS COMPANY
  1. Disconnect the engine harness electrical connector from the mass air flow/intake air temperature (MAF/IAT) sensor.
    2. Fig 2: View Of Air Cleaner Outlet Duct To Throttle Body
    GM1670790Courtesy of GENERAL MOTORS COMPANY
  2. Loosen the air cleaner outlet duct clamp at the throttle body.
    3. Fig 3: View Of Air Cleaner Outlet Duct
    GM1670799Courtesy of GENERAL MOTORS COMPANY
  3. Loosen the air cleaner outlet duct clamp at the MAF/IAT sensor.
  4. Remove the air cleaner outlet duct.
    5. Fig 4: Identifying MAF/IAT Sensor Bolts
    GM1670874Courtesy of GENERAL MOTORS COMPANY
  5. Remove the MAF/IAT sensor bolts.
  6. Remove the MAF/IAT sensor.
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