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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1785 (ENGINE CONTROLS AND FUEL - 4.4L - INTRODUCTION)REPAIR INSTRUCTIONSENGINE CONTROL MODULE REPLACEMENTREMOVAL PROCEDURE
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Removal Procedure

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Removal 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.
  1. Using a scan tool, retrieve the percentage of remaining engine oil and the remaining automatic transmission fluid life. Record the remaining engine oil and the remaining automatic transmission fluid life.
  2. Turn OFF the ignition.
  3. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (Side Post) .
    4. Fig 1: View Of Front Air Deflector And Push Pin retainers
    GM699902Courtesy of GENERAL MOTORS CORP.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the front air deflector. Refer to Front Air Deflector Replacement .
    6. Fig 2: View Of ECM
    GM1269407Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the engine control module (ECM) electrical connectors (1).
  7. Remove the ECM mounting nuts (2).
  8. Remove the ECM from the vehicle.
RENDER: 1.0x

NO RELATED

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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.