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Removal Procedure

    Fig 1: Transmission Control Module, Engine Control Module & A/C Pressure Sensor Electrical Connectors
    GM1561318Courtesy of GENERAL MOTORS CORP.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life, if required.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (RPO LS4) or Battery Negative Cable Disconnection and Connection (RPOs L26/L32) .
  3. Remove the left front inner fender brace. Refer to Front Fender Upper Diagonal Brace Replacement .
  4. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  5. Disconnect the ECM electrical connectors (2).
    6. Fig 2: View Of ECM
    GM1554547Courtesy of GENERAL MOTORS CORP.
  6. Remove the ECM from the air cleaner lower housing.
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