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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 680 (Engine Controls And Fuel - 2.4L - Introduction (2 Of 2)) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
    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 (ECM) cover.
    4. Fig 2: View Of Engine Harness Electrical Connectors
    GM1651050Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the body wiring harness electrical connector (3) from the ECM.
  5. Disconnect the engine harness electrical connectors (2) from the ECM.
    6. Fig 3: View Of ECM And Bracket
    GM1651051Courtesy of GENERAL MOTORS CORP.
    NOTE: Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables or when charging the vehicles battery.
  6. Disengage the side retaining tab in order to release the ECM (1) from the bracket.
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