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Home >> Chevrolet >> 2006 >> Optra LS, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (Engine Controls - 1.4L DOHC - Introduction And Mechanical Repairs) >> Repair Instructions >> Engine Control Module (ECM) Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2005 Chevrolet Optra5 and 2005 Chevrolet Optra. However, it is still accessible from the selected car via links, so may be relevant.
    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 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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