GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1225011  Size: SH
  1. Disconnect the engine control module (ECM) connector.

  2. Object Number: 1225003  Size: SH
  3. Remove the ECM bolts and the ECM.

Installation Procedure


Object Number: 1225062  Size: SH

Caution: Refer to Fastener Caution in the Preface section.

Note: If disconnecting the battery cable to the ECM, the idle air control (AC) valve reset procedure should be performed.

Install the ECM with the bolts and tighten to 6-8 N·m (53-71 lb in).