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

    Fig 1: Identifying ECM
    GM1289499Courtesy of GENERAL MOTORS CORP.
  1. Connect the ECM connectors to the ECM.
  2. Align the ECM into the mounting base.
  3. Snap the ECM into its mounting base.
  4. Install the ECM trim locks.
  5. Connect the negative battery cable.
  6. Perform a crankshaft position system variation learning procedure. Refer to CKP System Variation Learn Procedure .
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