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Home >> GMC >> 2001 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls - 4.3L - Repair Instructions) >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    CAUTION:

    Refer to Safety Glasses/Goggles in CAUTIONS AND NOTICES .

  1. Clean the gasket surface on the intake manifold.
    2. Fig 1: View Of Throttle Body & Gasket
    GM12853Courtesy of GENERAL MOTORS COMPANY
  2. Install the throttle body assembly with a new seal.
    3. Fig 2: View Of Throttle Body & Attaching Studs
    GM12852Courtesy of GENERAL MOTORS COMPANY
  3. Refer to FASTENER NOTICE in Cautions and Notices.

    Install the throttle body assembly retaining studs.

    Tighten 

    Tighten the studs to 9 N.m (80 lb in).

    4. Fig 3: View Of Throttle Position (TP) Sensor Harness Connector
    GM12885Courtesy of GENERAL MOTORS COMPANY
  4. Connect the TP sensor harness connector.
    5. Fig 4: View Of IAC Valve Electrical Connector
    GM312513Courtesy of GENERAL MOTORS COMPANY
  5. Connect the IAC valve harness connector.
    6. Fig 5: View Of Throttle Body Bracket
    GM424533Courtesy of GENERAL MOTORS COMPANY
  6. Install the accelerator cable routing bracket using the mounting nuts.

    Tighten 

    Tighten the nuts to 9 N.m (80 lb in).

  7. Install accelerator bracket and bracket nuts.

    Tighten 

    Tighten the nuts to 12 N.m (106 lb in).

    8. Fig 6: Identifying Accelerator Cable/Throttle Body Lever
    GM325556Courtesy of GENERAL MOTORS COMPANY
    IMPORTANT:

    Ensure the throttle and the cruise control linkage does not hold the throttle open. Refer to Accelerator Control Cable Replacement .

  8. Install the accelerator cable.
    9. Fig 7: View Of Cruise Control Cable
    GM325550Courtesy of GENERAL MOTORS COMPANY
  9. Install the cruise control cable.
    10. Fig 8: View Of Air Cleaner Outlet Resonator Stud
    GM424550Courtesy of GENERAL MOTORS COMPANY
  10. Install the air duct adapter stud.

    Tighten 

    Tighten the studs to 8 N.m (71 lb in).

  11. Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
    12. IMPORTANT:

    The pedal should operate freely without binding between full and closed throttle.

  12. Check the accelerator pedal for proper operation.
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