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Home >> Chevrolet >> 2009 >> Chevy Express G3500, Van Passenger Extended >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System & Fuel System - 6.6L LMM - Introduction) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure

Removal Procedure

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  1. Using a scan tool, capture the ECM data.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Remove the ECM water deflector.
  4. Fig 1: Identifying ECM Upper Retaining Tabs
    GM1655954Courtesy of GENERAL MOTORS CORP.

    Release the ECM upper retaining tabs.
    5. Fig 2: Identifying ECM Electrical Connector
    GM1655955Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the ECM electrical connectors.
  6. Remove the ECM from the bracket.
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