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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1611 (Engine Control System & Fuel System - 6.6L (LMM) - Repair Instructions) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying ECM Electrical Connectors
    GM1612203Courtesy of GENERAL MOTORS CORP.
  1. Using a scan tool, capture the ECM data.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Single Battery) or Battery Negative Cable Disconnection and Connection (Dual Batteries) or Battery Negative Cable Disconnection and Connection (Auxiliary Battery) .
  3. Disconnect the ECM electrical connectors (2).
    4. Fig 2: Identifying ECM Retaining Tabs
    GM1603136Courtesy of GENERAL MOTORS CORP.
  4. Release the ECM upper retaining tabs.
  5. Remove the ECM from the bracket.
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