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Home >> Pontiac >> 2005 >> Bonneville GXP >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 4.6L - Introduction >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Removal Procedure

Removal Procedure

NOTE: Turn the ignition OFF when installing or removing the PCM connectors and disconnecting or reconnecting the power to the PCM (battery cable, PCM pigtail, PCM fuse, jumper cables, etc.) in order to prevent internal PCM damage.
  1. Record the Transaxle Fluid and Engine Oil Life Indexes.
  2. Turn OFF the ignition.
  3. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
    4. Fig 1: View Of Intake Air Duct/resonator To PCM Housing Screw
    GM104644Courtesy of GENERAL MOTORS CORP.
  4. Remove the screw retaining the intake air duct/resonator (3) to the powertrain control module (PCM) housing.
    5. Fig 2: View Of Air Duct/Resonator Assembly & Air Cleaner Cover
    GM104607Courtesy of GENERAL MOTORS CORP.
  5. Unsnap the air filter housing clamps on top of the air cleaner housing assembly.
  6. Pull the intake air duct/resonator assembly (2) up enough to remove the air cleaner cover (3) and the PCM.
  7. Slide the air cleaner element assembly toward the fender to separate the air cleaner element assembly from the air inlet assembly.
    8. Fig 3: PCM Connector & Attaching Bolts
    GM142193Courtesy of GENERAL MOTORS CORP.
  8. Loosen the PCM connector attaching bolts.
  9. Disconnect both PCM connectors.
  10. Remove the PCM (1).
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