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Home >> Pontiac >> 2005 >> Grand Prix GXP >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 5.3L - Introduction >> 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: Throttle Body Assembly
    GM1411898Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW throttle body gasket (509). Align the locating tab of the gasket with the notch in the manifold.
  2. Position the throttle body (508) to the intake manifold.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the throttle body bolts (538).

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

    4. Fig 2: View Of Electrical Connectors
    GM1551867Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Verify that the throttle actuator motor harness connector and the connector seal are properly installed and not damaged.
  4. Connect the throttle actuator control motor electrical connector (3).
  5. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  6. Install the engine sight shield. Refer to Engine Sight Shield Replacement .
  7. Connect a scan tool in order to test for proper throttle opening and throttle closing ranges.
  8. 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).
  9. 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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