2007 Chevrolet Optra5 LS, AutomaticFACTORY OEM SERVICE PROCEDURE

Installation Procedure

    Fig 1: View Of ECM, Connectors And Bolts
    GM1701061Courtesy of GENERAL MOTORS CORP.
  1. Connect the ECM connectors to the ECM.
  2. Align the ECM into the mounting base.
  3. NOTE: Refer to Fastener Notice .
  4. Install the ECM bolts.

    Tighten:Β  Tighten the bolts to 8 N.m (71 lb in)Β  .

  5. Connect the negative battery cable.
  6. Perform a crankshaft position system variation learning procedure. Refer to Crankshaft Position System Variation LearnΒ .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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