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Home >> GMC >> 2010 >> Yukon Hybrid, 4WD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System & Fuel System - Hybrid (LZ1) - Repair Instructions >> Repair Instructions >> Engine Control Module Replacement >> Installation Procedure

Installation Procedure

    Fig 1: View Of Bracket Retainer Tabs, ECM Bracket & Tab
    GM1960213Courtesy of GENERAL MOTORS CORP.
  1. Set the bottom of ECM into the ECM bracket tab (2).
  2. Push the ECM (3) in securing the ECM to the bracket.
    3. Fig 2: View Of Engine Wiring Harness Electrical Connector & ECM
    GM1960211Courtesy of GENERAL MOTORS CORP.
  3. Position the engine wiring harness electrical connectors and engage the retainers securing the 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 .
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