2009 Chevrolet Traverse LS, AWDFACTORY OEM SERVICE PROCEDURE

Removal Procedure

    Fig 1: Identifying ECM Middle & Lower Electrical Connectors
    GM1857962Courtesy of GENERAL MOTORS CORP.
  1. Turn the ignition OFF.
  2. 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.
  3. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  4. Disconnect the engine wiring harness middle and lower electrical connectors (1) from the ECM.
    5. Fig 2: View Of Engine Wiring Harness Clip & ECM Upper Electrical Connector
    GM1857961Courtesy of GENERAL MOTORS CORP.
  5. If also replacing the ECM bracket, remove the engine wiring harness clip (2) from the ECM bracket tab.
  6. Disconnect the engine wiring harness upper electrical connector (1) from the ECM.
    7. CAUTION: In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins.
Factory Service Tools

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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.

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