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Home >> Chevrolet >> 2004 >> Optra5 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.4L DOHC - Repair Instructions >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure

Removal Procedure

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    Fig 1: View Of Engine Control Module
    GM1289488Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  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, Bolt And Nut
    GM1289497Courtesy of GENERAL MOTORS CORP.
  4. Remove the ECM mounting bracket with the bolt and the nut.
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