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Home >> Chevrolet >> 2006 >> Impala LTZ >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.9L - Introduction (2 Of 2) >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure
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Installation Procedure

IMPORTANT: DO NOT reuse the throttle body gasket. Install a NEW gasket during assembly.
    Fig 1: Position The Throttle Body To The Intake Manifold
    GM1614648Courtesy 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.
    NOTE: Refer to Fastener Notice .
  3. Install the throttle body bolts/nuts.

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

    4. Fig 2: Position The Heater Inlet And Outlet Hose/Pipe
    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).

    Fig 3: Connecting The ETC Electrical Connector
    GM1608290Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: 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 Draining and Filling Cooling System (LS4 Static Fill) or Draining and Filling Cooling System (LZE, LZ4, LZ9 Static Fill) or Draining and Filling Cooling System (9C1, 9C3 Static Fill) or Draining and Filling Cooling System (LS4 GE 47716 Fill) or Draining and Filling Cooling System (LZE, LZ4, LZ9, 9C1, 9C3 GE 4771 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.
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