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HOMESERVICE MANUALSISUZU2006ASCENDER S, 5.3 M, 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM - 5.3L - INTRODUCTION (2 OF 2)REPAIR INSTRUCTIONSENGINE CONTROL MODULE (ECM) REPLACEMENTINSTALLATION PROCEDURE
2006 Isuzu Ascender S, 5.3 M, 4WD

Installation Procedure

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Installation Procedure
  1. If the ECM/TCM bracket (1) was previously removed, install the ECM/TCM bracket (1) to the vehicle frame.
    2. Fig 1: ECM/TCM Bracket Retaining Bolts
    GM1521466Courtesy of GENERAL MOTORS CORP.
  2. Install the ECM/TCM bracket retaining bolts (2).
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Tighten the ECM/TCM bracket bolts.

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

    4. Fig 2: ECM/TCM Bracket
    GM1521468Courtesy of GENERAL MOTORS CORP.
  4. If the TCM was previously removed from the ECM/TCM bracket (2), install the TCM (1). Refer to Transmission Control Module (TCM) Replacement in Automatic Transmission - 4L60-E/4L65-E.
    5. Fig 3: ECM
    GM1521503Courtesy of GENERAL MOTORS CORP.
  5. Insert the ECM (2) into the retaining slots of the ECM/TCM bracket (1).
    6. Fig 4: ECM/TCM Mounting Bracket
    GM1521502Courtesy of GENERAL MOTORS CORP.
  6. Secure the ECM (2) to the ECM/TCM mounting bracket ensuring the ECM retaining tabs (1) are fully engaged.
    7. Fig 5: ECM/TCM
    GM1521497Courtesy of GENERAL MOTORS CORP.
  7. Connect the ECM electrical connectors (2) to the ECM (1) if previously removed.
    8. Fig 6: ECM/TCM Cover & Bracket
    GM1521469Courtesy of GENERAL MOTORS CORP.
  8. Install the ECM/TCM cover (2) to the ECM/TCM bracket (1).
  9. Ensure the ECM/TCM cover retainers (2) are fully engaged with the ECM/TCM bracket (1).
  10. Connect the cooling fan electrical connector.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  12. If the ECM was replaced the replacement ECM must be programmed. Refer to Control Module References in Computer/Integrating Systems.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.