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Home >> Cadillac >> 2002 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 232 (Body Control Modules) >> Removal & Installation >> Powertrain Control Module (Pcm) >> Removal & Installation (4L)
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Removal & Installation (4L)

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Record Transaxle Fluid and Engine Oil Life Indexes from Driver Information Center (DIC). Turn ignition switch to OFF position.
  2. Remove rear seat cushion to access battery. Disconnect negative battery cable.
  3. Disconnect Mass Airflow/Intake Air Temperature (MAF/IAT) sensor electrical connector.
  4. Loosen intake air duct clamp at throttle body. Loosen air filter housing cover screws. Remove air filter cover, MAF/IAT sensor and intake air duct.
  5. Disconnect both PCM connectors. Remove PCM. See Figure.