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Home >> Hummer >> 2004 >> H2 4D Utility Pickup >> Repair and Diagnosis >> External Pages >> Different car >> Section 169 (Removal & Installation) >> Computerized Engine Controls >> Powertrain Control Module >> Removal

Powertrain Control Module: Removal

WARNING: This page is about a different car, the 2003 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure ignition is off. Disconnect negative battery cable. Locate PCM at left side of engine compartment. See Fig 1. Release PCM cover from mounting tabs on PCM bracket.
  2. Release PCM cover from mounting bracket. Remove PCM cover.
  3. Loosen both PCM connector retaining bolts. Disconnect PCM harness connectors. Release spring latch from PCM. Release PCM mounting tabs from PCM. Remove PCM.
Fig 1: Locating PCM
G00219702Courtesy of GENERAL MOTORS CORP.
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