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Home >> Chevrolet >> 2007 >> Impala LT, 3.9 R >> Repair and Diagnosis >> External Pages >> Different car >> Section 903 (Engine Controls And Fuel - 3.6L - Repair Instructions) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2010 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of ECM At Battery Tray
    GM1838645Courtesy of GENERAL MOTORS CORP.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  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 (LE5, LE9, LZ4, LZE, or LY7) .
  5. Lift and gently pull the ECM up and out of the retainer on the battery tray.
    6. Fig 2: Identifying ECM Wiring Harness Connectors
    GM1838648Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the engine wiring harness electrical connectors (1) from the ECM.
  7. Disconnect the body wiring harness electrical connector (2) from the ECM.
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