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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Engine Control System & Fuel System - 3.7L - Introduction (2 Of 2)) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 GMC Canyon, and 2008 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
    2. Fig 1: View Of Engine Wiring Harness & Retainers
    GM1350711Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the ECM harness connectors (2) from the ECM (3).
    3. NOTE: Do not touch the connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD) damage to the PCM.
    Fig 2: View Of PCM
    GM1352004Courtesy of GENERAL MOTORS CORP.
  3. Disengage the ECM bracket mounting tabs, while removing the ECM.
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