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Home >> Chevrolet >> 2009 >> Impala LTZ >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.9L - Introduction >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure
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Installation Procedure

NOTE: DO NOT reuse the throttle body gasket. Install a NEW gasket during assembly.
    Fig 1: Identifying Throttle Body, Throttle Body Seal & Intake Manifold
    GM1608805Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW throttle body gasket. Align the locating tab of the gasket with the notch in the manifold.
  2. Position the throttle body to the intake manifold.
    3. CAUTION: Refer to Fastener Caution .
  3. Install the throttle body bolts.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

    4. Fig 2: Coolant Inlet And Outlet Hoses/Pipes
    GM1608325Courtesy of GENERAL MOTORS CORP.
  4. Position the heater inlet and outlet hose/pipe.
  5. Position the heater inlet and outlet hose clamps at the engine pipes.
  6. Install the heater inlet and outlet pipe clip nuts to the throttle body studs.

    Tighten:  Tighten the nuts to 10 N.m (89 lb in).

    7. Fig 3: View Of EVAP Canister Purge Solenoid Electrical Connector
    GM1608290Courtesy of GENERAL MOTORS CORP.
    NOTE: Verify that the throttle actuator motor harness connector and the connector seal are properly installed and not damaged.
  7. Connect the ETC electrical connector (2).
  8. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  9. Fill the engine cooling. Refer to Cooling System Draining and Filling (9C1, 9C3 Static Fill) or Cooling System Draining and Filling (LZE, LZ4, LGD Static Fill) or Cooling System Draining and Filling (LZE, LZ4, LGD, 9C1, 9C3, GE47716 Fill) .
  10. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  11. Connect a scan tool in order to test for proper throttle opening and throttle closing ranges.
  12. Operate the accelerator pedal and monitor the throttle angles.

    The accelerator pedal should operate freely, without binding, between closed throttle, and wide open throttle (WOT).

  13. Verify that the vehicle meets the following conditions:
    • The vehicle is not in a reduced engine power mode.
    • The ignition is ON.
    • The engine is OFF.
  14. Perform the Throttle Learn Procedure. Refer to Throttle Learn .
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