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Home >> Chevrolet >> 2008 >> Optra LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.6L >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: View Of Engine Control Module
    GM1289488Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution .
  1. Disconnect the negative battery cable.
  2. Disconnect the engine control module (ECM) wiring harness connector.
  3. Remove the nuts from the ECM mounting bracket.
    4. Fig 2: View Of ECM Mounting Bracket And Bolt And Nut
    GM1289497Courtesy of GENERAL MOTORS CORP.
  4. Remove the ECM mounting bracket with the bolt and the nut.
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