GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Aveo 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Aisin (81-40LE) 🢒 Engine Control Module Replacement

Removal Procedure

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


    Object Number: 1241940 Size: SH
  1. Disconnect the negative battery cable.
  2. Disconnect the engine control module (ECM) connectors.
  3. Remove the ECM retaining bolts.
  4. Remove the ECM from the ECM mount.

Installation Procedure

    Object Number: 1241941 Size: SH
  1. Position the ECM in place.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the ECM to the ECM mount and install the retaining bolts.

    3. Tighten
    Tighten the ECM retaining bolts to 4 N·m (35 lb in).

  3. Connect the negative battery cable.
  4. Perform a crankshaft position system variation learning procedure. Refer to Crankshaft Position System Variation Learn .