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Home >> Saturn >> 2005 >> Relay FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.5L - Introduction (2 Of 2) >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Removal Procedure
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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 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5 000 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. Fig 1: Identifying Battery & Powertrain Control Module (PCM)
    GM1544730Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  3. Remove the left sheet metal diagonal brace. Refer to Brace Replacement - Sheet Metal Diagonal (Chevrolet) or Brace Replacement - Sheet Metal Diagonal (Pontiac) or Brace Replacement - Sheet Metal Diagonal (Buick) in Body Front End.
  4. Remove the air cleaner assembly cover (1) and lift the PCM (2) from the air cleaner assembly (3).
  5. Disconnect the harness connectors (4) from the PCM.
  6. Remove the PCM from the engine compartment.
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