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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROL SYSTEM - 4.8L, 5.3L, AND 6.0L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSTHROTTLE BODY ASSEMBLY REPLACEMENTREMOVAL PROCEDURE
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Removal Procedure

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Removal Procedure
WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Do not for any reason, insert a screwdriver or other small hand tools into the throttle body to hold open the throttle plate, as the wedge inside the throttle body could be damaged.
  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
    2. Fig 1: View Of Accelerator/Throttle Cable
    GM389031Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the accelerator control cable and the cruise control cable from the throttle body.
  3. Disconnect the vacuum hose from the throttle body.
    4. Fig 2: View Of TP Sensor & IAC Valve Electrical Connectors
    GM389028Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the throttle position (TP ) sensor and idle air control (IAC) valve harness connectors.
    5. Fig 3: View Of Coolant Hose At Throttle Body
    GM220620Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the coolant hose from the throttle body.
    6. Fig 4: Identifying Coolant Air Bleed Hose At Throttle Body
    GM220621Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the coolant hose from the vapor vent pipe.
    7. Fig 5: Throttle Body Nuts
    GM260174Courtesy of GENERAL MOTORS CORP.
  7. Remove the throttle body attaching nuts.
  8. Remove the throttle body and the gasket. Discard the gasket.
    9. NOTE: In order to prevent damage to the sealing surfaces, carefully use sharp tools in cleaning the old gasket from the aluminum surfaces.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.