2010 Pontiac G5 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Removal Procedure

    Fig 1: View Of Engine Control Module (ECM) Cover
    GM1656931Courtesy of GENERAL MOTORS CORP.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Remove the engine control module cover.
    4. Fig 2: View Of Body Wiring Harness Electrical Connector
    GM1833664Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the body wiring harness electrical connector (1) from the ECM.
    5. Fig 3: View Of Engine Wiring Harness Electrical Connector
    GM1833663Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the engine wiring harness electrical connector (1) from the ECM.
    6. Fig 4: View of ECM Retaining Tab
    GM1833662Courtesy of GENERAL MOTORS CORP.
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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