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Home >> Chevrolet >> 2009 >> Chevy Express G3500, Van Passenger Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.8L, 5.3L Or 6.0L - Introduction >> Repair Instructions >> Engine Control Module Replacement >> Installation Procedure

Installation Procedure

    Fig 1: View Of ECM Bracket Tabs, ECM & Bracket
    GM1932024Courtesy of GENERAL MOTORS CORP.
  1. Install the ECM (4) to the bracket (2).
  2. Ensure that the ECM bracket tabs (3) fully engage the ECM.
    3. Fig 2: View Of Engine Wiring Harness Electrical Connectors
    GM1932023Courtesy of GENERAL MOTORS CORP.
  3. Connect the engine wiring harness electrical connectors (2) to the ECM (1).
  4. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  5. If a new ECM was installed, program the ECM. Refer to Control Module References .
  6. Using a scan tool, set the remaining engine oil life.
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