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Home >> Buick >> 2009 >> Lucerne Super >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.6L - Introduction >> Repair Instructions >> Air Cleaner Assembly Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Identifying MAF/IAT Sensor Bolts
    GM1670874Courtesy of GENERAL MOTORS CORP.
  1. If the upper air cleaner housing was replaced only perform the following steps otherwise proceed to step 6.
  2. Install the MAF/IAT sensor.
    3. CAUTION: Refer to Fastener Caution .
  3. Install the MAF/IAT sensor bolts.

    Tighten:  Tighten the bolts to 4 N.m (35 lb ft).

    4. Fig 2: View Of Air Cleaner Outlet Duct
    GM1670799Courtesy of GENERAL MOTORS CORP.
  4. Install the air cleaner outlet duct.
  5. Tighten the air cleaner outlet duct clamp at the MAF/IAT sensor.

    Tighten:  Tighten the clamp to 4 N.m (35 lb in).

    6. Fig 3: Identifying Air Cleaner Lower Housing
    GM1674290Courtesy of GENERAL MOTORS CORP.
  6. Place the lower air cleaner housing over the studs and push down firmly in order to engage the grommets to the studs.
    7. Fig 4: Identifying Engine Harness Electrical Connector Lever Locks At ECM
    GM1664479Courtesy of GENERAL MOTORS CORP.
  7. Install the engine harness and ECM to the lower housing.
    8. Fig 5: Identifying Lower Housing Clips
    GM1670787Courtesy of GENERAL MOTORS CORP.
  8. Install the air cleaner upper housing.
  9. Engage the 3 integral clips (1) on the lower housing to the upper housing.
    10. Fig 6: View Of Air Cleaner Outlet Duct To Throttle Body
    GM1670790Courtesy of GENERAL MOTORS CORP.
  10. Install the air cleaner outlet duct to the throttle body.
  11. Tighten the air cleaner outlet duct clamp at the throttle body.

    Tighten:  Tighten the clamp to 4 N.m (35 lb in).

    12. Fig 7: Identifying Secondary AIR Pump Inlet Tube/Hose
    GM1665331Courtesy of GENERAL MOTORS CORP.
  12. Connect the AIR pump inlet hose quick connect fitting to the air cleaner. Refer to Plastic Collar Quick Connect Fitting Service .
    13. Fig 8: Identifying PCV Fresh Air Tube
    GM1661022Courtesy of GENERAL MOTORS CORP.
  13. Connect the PCV fresh air tube quick connect fitting to the air cleaner outlet duct. Refer to Plastic Collar Quick Connect Fitting Service .
    14. Fig 9: Locating MAF/IAT Sensor Connector
    GM1670786Courtesy of GENERAL MOTORS CORP.
  14. Connect the engine harness electrical connector to the MAF/IAT sensor.
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