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Home >> Chevrolet >> 2005 >> Optra5 Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - 2.0L (L34 GMDAT) - 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 (CKP) system variation learning procedure and the idle learn procedure. Refer to CKP System Variation Learn Procedure  and Idle Learn Procedure .
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