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Home >> Hummer >> 2005 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: PCM & Engine Compartment
    GM863127Courtesy of GENERAL MOTORS CORP.
  1. Install the PCM to the PCM mounting bracket ensuring that the mounting tabs are engaged.
  2. Secure the spring latch to the PCM.
    3. Fig 2: PCM Harness Connectors
    GM863125Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Connect the PCM connectors to the PCM.

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

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