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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (Engine Controls/Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Air Cleaner Resonator Outlet Duct Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of PCV Tube
    GM1696754Courtesy of GENERAL MOTORS COMPANY
  1. Remove the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the positive crankcase ventilation (PCV) line (1) from the air cleaner outlet duct.
    3. Fig 2: View Of Air Cleaner Outlet Duct & Inlet Hose Clamp Clip
    GM1965341Courtesy of GENERAL MOTORS COMPANY
  3. Remove the radiator inlet hose clamp clip (2) from the air cleaner outlet duct (1).
    4. Fig 3: View Of Air Cleaner Outlet Duct & Clamps
    GM1965334Courtesy of GENERAL MOTORS COMPANY
  4. Loosen the air cleaner outlet duct clamp (1) at the mass air flow (MAF)/intake air temperature (IAT) sensor.
  5. Loosen the air cleaner outlet duct clamp (2) at the throttle body.
  6. Lift up the air cleaner outlet duct at the resonator tab in order to separate the resonator from the stud on the intake manifold.
  7. Remove the air cleaner outlet duct (3) from the throttle body and MAF/IAT sensor.
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