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Home >> Chevrolet >> 2005 >> Optra5 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.8L (L79) - Introduction And Mechanical Repairs >> Repair Instructions >> Engine Control Module (ECM) Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Identifying ECM
    GM1289499Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable.
  2. Remove the air intake tube and resonator.
  3. Disconnect the engine control module (ECM) connectors from the ECM.
  4. Remove the ECM.
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