LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 466 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - Repair Instructions) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of ECM Components
    GM1703437Courtesy of GENERAL MOTORS COMPANY
  1. Record the current Engine Oil Life percentage, and use a scan tool to update the NEW ECM, if replacing.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Disengage the engine wiring harness upper electrical connector retainer (2) and remove the connector (1) from the ECM.
  4. Disengage the engine wiring harness lower electrical connector retainer (3) and remove the connector (4) from the ECM.
    5. Fig 2: View Of ECM & Bracket
    GM1703439Courtesy of GENERAL MOTORS COMPANY
  5. Disengage the retainer tabs securing the ECM to the bracket.
  6. Remove the ECM.
scientia non olet · About LEMON Manuals