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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 >> Throttle Body Assembly 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 Engine Wiring Harness Electrical Connectors & Clip
    GM1960882Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Handle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in cleaning solvents of any type.

    CAUTION:

    DO NOT for any reason, insert a screwdriver or other small hand tools into the throttle body to hold open the throttle plate, as the wedge inside the throttle body could be damaged.

  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  2. Disconnect the engine wiring harness electrical connector (2) from the electronic throttle control.
  3. Fig 2: Throttle Body Assembly
    GM1401966Courtesy of GENERAL MOTORS COMPANY
  4. Remove the throttle body nuts (507) and bolts (538).
  5. Remove the throttle body (508).
  6. Remove and discard the throttle body gasket (509).