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Powertrain Control Module: Removal

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. 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 front corner of engine compartment. See Fig 1. Release PCM cover from mounting tabs on PCM bracket.
  2. Remove PCM cover from PCM. Loosen PCM harness connector bolts. See Fig 2. Disconnect PCM harness connectors. Release the PCM spring latch. Release PCM mounting tabs. Remove PCM.
Fig 1: Locating PCM
G00156231Courtesy of GENERAL MOTORS CORP.
Fig 2: Removing/Installing PCM
G00156232Courtesy of GENERAL MOTORS CORP.
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