GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Malibu 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T40-E/4T45-E 🢒 Powertrain Control Module Replacement

Removal Procedure

    Important: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100%. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change.

  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.

    2. Object Number: 1239105 Size: SH
  2. Record the preset radio stations.
  3. Turn the ignition OFF.
  4. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  5. Disconnect the PCM harness connectors.

    6. Object Number: 1239103 Size: SH
  6. Release the retaining tab located in the battery box lower half using a small screwdriver or other suitable tool.
  7. Remove the PCM by lifting upward after releasing the tab.

Installation Procedure

    Object Number: 1239103 Size: SH
  1. Slide the PCM into the PCM bracket on the front of the battery box.
  2. Push down on the PCM until the retaining tab snaps into place.

    3. Object Number: 1239105 Size: SH
  3. Connect the PCM harness connectors.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

    5. Tighten
    Tighten the battery terminal bolts to 17 N·m (13 lb ft).

    Important: Following the PCM reprogramming , the PCM will have to learn the crankshaft position variation for misfire diagnostics.

  5. Perform the crankshaft relearn procedure. Refer to DTC P0315 .
  6. Verify no DTCs exist.
  7. Reset the clock and preset radio stations.