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Home >> Buick >> 2005 >> Allure CXS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 3.6L (Ly7) - Introduction (2 Of 2) >> Repair Instructions >> Engine Control Module (ECM) Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Locating ECM Bracket & Bolts
    GM1394048Courtesy of GENERAL MOTORS CORP.
  1. Install the ECM bracket, as necessary.
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the ECM bracket bolts.

    Tighten:  Tighten the ECM bracket bolts to 10 N.m (89 lb in).

    3. Fig 2: View Of ECM Bolts
    GM1394049Courtesy of GENERAL MOTORS CORP.
    NOTE: In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins.
  3. Install the ECM.
  4. Install the ECM bolts.

    Tighten:  Tighten the ECM bolts to 10 N.m (89 lb in).

    5. Fig 3: Identifying ECM Redundant Ground Wire And Bolt
    GM1394045Courtesy of GENERAL MOTORS CORP.
  5. Install the ECM redundant ground and bolt to the ECM.

    Tighten:  Tighten the ECM redundant ground wire bolt to 5 N.m (44 lb in).

    6. Fig 4: Locating Engine Side (Inboard) ECM Connector
    GM1394046Courtesy of GENERAL MOTORS CORP.
  6. Install the engine side (inboard) ECM connector.
    7. Fig 5: Identifying Engine Control Module Side Electrical Connector
    GM1394047Courtesy of GENERAL MOTORS CORP.
  7. Install the body side (outboard) ECM connector.
  8. Install the ECM/TCM fuse in the underhood fuse block. Refer to Electrical Center Identification Views in Wiring Systems.
  9. Install the TCM/IPC fuse in the underhood fuse block. Refer to Electrical Center Identification Views in Wiring Systems.
  10. Install the ECM fuse in the underhood fuse block. Refer to Electrical Center Identification Views in Wiring Systems.
  11. Connect the battery negative cable to the battery. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  12. Program the ECM. Refer to Service Programming System (SPS) in Programming and Setup.
  13. Turn OFF the ignition for at least 5 seconds after the programming event is complete.
  14. Perform the idle learn procedure. Refer to Idle Learn Procedure .
  15. Use the scan tool to clear all DTCs.
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