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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.2L - Introduction >> Repair Instructions >> Engine Control Module Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: View Of ECM
    GM863127Courtesy of GENERAL MOTORS CORP.
  1. Install the ECM to the ECM mounting bracket ensuring that the mounting tabs are engaged.
  2. Secure the spring latch to the ECM.
    3. Fig 2: View Of ECM Harness Connectors
    GM863125Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  3. Connect the ECM connectors to the ECM.

    Tighten:  Tighten the fasteners to 8 N.m (71 lb in).

    4. Fig 3: View Of ECM Cover
    GM863123Courtesy of GENERAL MOTORS CORP.
  4. Install the ECM cover to the ECM mounting bracket, ensuring the mounting tabs on the ECM mounting bracket are engaged into the mounting holes in the ECM cover.
  5. If a new ECM is being installed, program the ECM. Refer to Control Module References .
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