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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 >> Removal Procedure
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Removal Procedure

    NOTE:

    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.

    IMPORTANT:

    The vehicle is equipped with electronic throttle control (ETC), the throttle position (TP) sensor is NOT serviceable separately from the throttle body. The throttle body and TP sensor MUST be serviced as an assembly.

  1. An 8 digit part identification number is stamped on the throttle body casting. Refer to this number if replacement is required.
  2. Remove the air induction assembly.
    IMPORTANT:

    Cover or plug any openings when servicing the throttle body in order to prevent possible contamination.

  3. Disconnect the throttle actuator motor harness connector.
  4. Disconnect the throttle position TP sensor harness connector.
  5. Remove the throttle body attaching nuts.
    6. Fig 1: View Of Throttle Body Assembly
    GM470760Courtesy of GENERAL MOTORS COMPANY
    IMPORTANT:

    Do not reuse the throttle body gasket. Install a new gasket during assembly.

  6. Remove the throttle body and the gasket.
  7. Discard the throttle body gasket.
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