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Home >> GMC >> 2001 >> C3500 HD 8.1 G, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L - Repair Instructions >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: View Of Throttle Body Assembly
    GM470760Courtesy of GENERAL MOTORS COMPANY
  1. Install a new throttle body gasket.
  2. Install the throttle body assembly.
  3. Refer to FASTENER NOTICE in Cautions and Notices.
    IMPORTANT:

    Always use a torque wrench in order to obtain the proper torque.

    Install the throttle body attaching nuts.

    Tighten 

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

    4. IMPORTANT:

    Ensure that the electrical connector to throttle body motor and the connector seal are properly installed and not damaged.

  4. Connect the TP sensor harness connector.
  5. Connect the throttle actuator motor harness connector.
  6. Install the air induction assembly.
  7. With the vehicle not in reduced engine power, turn ON the ignition, with the engine OFF. Inspect for complete throttle opening and closing positions. Use a scan tool to monitor the throttle angles while operating the accelerator pedal to open and close the throttle. The accelerator pedal should operate freely without binding between full closed throttle and wide open throttle (WOT).
  8. Start the engine.
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