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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 409 (Engine Controls - 4.3L (Introduction)) >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Installation Procedure
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Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the PCM.

    Ensure that the mounting tabs are engaged.

  2. Secure the spring latch to the PCM.
    3. Fig 1: View Of PCM
    GM814119Courtesy of GENERAL MOTORS CORP.
  3. Connect the PCM electrical connectors.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Tighten the PCM electrical connector bolts (2).

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

    5. Fig 2: View Of PCM Electrical Connectors & Bolts
    GM814117Courtesy of GENERAL MOTORS CORP.
  5. Install the PCM cover.

    Ensure the mounting tabs are engaged into the mounting holes in the cover.

    6. Fig 3: View Of PCM Cover & Mounting Bracket
    GM814118Courtesy of GENERAL MOTORS CORP.
  6. If a NEW PCM was installed, program the PCM. Refer to Service Programming System (SPS) in Programming.
  7. Perform the crankshaft position (CKP) system variation learn procedure. Refer to CKP System Variation Learn Procedure .
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