GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Optra 🢒 Engine 🢒 Engine Controls and Fuel - 1.4L (L95) 🢒 Engine Control Module Replacement

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1289488 Size: SH
  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. Object Number: 1289497 Size: SH
  4. Remove the ECM mounting bracket with the bolt and the nut.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1289497 Size: SH
  1. Install the ECM mounting bracket with the bolt and the nut and tighten to 12 N·m (9 lb ft).

    2. Object Number: 1289488 Size: SH
  2. Install the ECM with the nuts and tighten to 12 N·m (9 lb ft)
  3. Refer to Control Module References for programming and setup information.