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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 445 (ENGINE CONTROLS AND FUEL - 4.4L - INTRODUCTION)REPAIR INSTRUCTIONSINTAKE AIR TEMPERATURE (IAT) SENSOR 2 REPLACEMENTINSTALLATION PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.
    Fig 1: Locating Intake Air Temperature (IAT) Sensor
    GM1613989Courtesy of GENERAL MOTORS CORP.
  1. Coat the sensor threads with sealer. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    2. CAUTION: Refer to Fastener Caution .
  2. Install the IAT sensor 2 (1) and tighten to 20 N.m (15 lb ft).
    3. Fig 2: View Of Intake Air Temperature (IAT) Sensor Connector
    GM1645247Courtesy of GENERAL MOTORS CORP.
  3. Connect the IAT sensor 2 electrical connector.
  4. Install the intake manifold sight shield. Refer to Intake Manifold Sight Shield Replacement .
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.