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Home >> Chevrolet >> 2005 >> Astro Van Cargo, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - (Introduction) Specifications & Repair Instructions >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure
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Installation Procedure

    CAUTION: Refer to Safety Glasses Caution 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 CORP.
  2. Install the throttle body assembly with a new seal.
    3. Fig 2: View Of Throttle Body & Attaching Studs
    GM12852Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the throttle body assembly retaining studs.

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

  4. Install the air cleaner outlet resonator adapter stud.

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

    5. Fig 3: View Of Throttle Position (TP) Sensor Harness Connector
    GM12885Courtesy of GENERAL MOTORS CORP.
  5. Connect the TP sensor harness connector.
    6. Fig 4: View Of IAC Valve Electrical Connector
    GM312513Courtesy of GENERAL MOTORS CORP.
  6. Connect the IAC valve harness connector.
  7. Install the accelerator control cable bracket using the fasteners.

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

    8. Fig 5: Identifying Accelerator Cable/Throttle Body Lever
    GM325556Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Ensure the accelerator and the cruise control cables do not hold the throttle open.
  8. Install the accelerator cable.
    9. Fig 6: View Of Cruise Control Cable
    GM325550Courtesy of GENERAL MOTORS CORP.
  9. Install the cruise control cable.
  10. Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
  11. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  12. Connect the negative battery cable.
    13. IMPORTANT: The accelerator pedal should operate freely without binding between full and closed throttle.
  13. Use the following procedure in order to check the accelerator pedal operation.
    1. Depress the pedal to the floor.
    2. Release the accelerator pedal.
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