GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2002 🢒 VUE - AWD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Engine Control Module Replacement

    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: 897621 Size: SH
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  3. Disconnect the intake air temperature (IAT) sensor.
  4. Loosen the clamp at the air cleaner assembly.
  5. Remove the push pin attachment from the outlet resonator/duct assembly to support bracket.
  6. Loosen the clamp at the throttle body assembly.
  7. Disconnect the PCV fresh air hose at the cam cover.
  8. Remove the outlet resonator/duct assembly.
  9. Remove the J 1 and J 2 connectors at the ECM.
  10. Remove the 4 ECM attachment bolts.

Installation Procedure

    Object Number: 932395 Size: SH
  1. Install the ECM.

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

  2. Install the ECM bolts.

    3. Tighten
    Tighten the engine control module bolts to 8 N·m (71 lb in).

  3. Connect the J 1 and J 2 ECM electrical connectors.
  4. Install the outlet resonator/duct assembly into position.
  5. Connect the PCV fresh air vent hose assembly.
  6. Tighten the clamp at the throttle body assembly.
  7. Position the outlet resonator/duct assembly up with the support bracket and install the push-pin.
  8. Tighten the clamp at the air cleaner assembly.
  9. Connect the intake air temperature (IAT) sensor connector.
  10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

    11. Notice: If a new ECM is being installed, it must be reprogrammed with new software and calibrations. Refer to Service Stall System (SSS) User Guide for reprogramming procedures. The ECM may be damaged if the reprogramming process is interrupted. Make sure the scan tool is connected securely to the DLC and the vehicle battery has sufficient charge.

    Important: Ensure the original ECM has the correct VIN and vehicle options.

  11. Reprogram the ECM. Refer to Service Programming System (SPS) in Programming .

    12. Important: The new ECM must learn the passlock password from the BCM. When the ECM reprogram is completed, use the SSS to perform the ECM Passlock Relearn Procedure.

  12. Perform the Passlock Relearn Procedure using the Service Stall System (SSS).
  13. Turn the ignition to OFF for 10 seconds.

    14. Important: Following the ECM reprogramming, the ECM will have to learn the crankshaft notch variation for misfire diagnostics.

  14. Perform the crankshaft relearn procedure. Refer to Crankshaft Position System Variation Learn .
  15. Verify no DTCs exist. If one exists, refer to the specific DTC diagnostic.