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Home >> GMC >> 2002 >> C3500 HD 8.1 G, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L >> 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.
  1. An 8 digit part identification number is stamped on the throttle body casting. Refer to this number if servicing, or part 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 bolts.

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

  6. Remove the throttle body and gasket.
  7. Discard the throttle body gasket.
    Fig 1: Throttle Body & Gasket
    G01598893Courtesy of GENERAL MOTORS CORP.