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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1479 (ANTILOCK BRAKE SYSTEM, TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEM)REPAIR INSTRUCTIONSELECTRONIC BRAKE CONTROL MODULE REPLACEMENTINSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Insulator Mounting Bolt To EBCM
    GM1415808Courtesy of GENERAL MOTORS CORP.
  1. Clean the BPMV seal surface with alcohol using a clean rag.
  2. Install the seal to the BPMV if it is not cut or damaged.
  3. Install the EBCM to the BPMV.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Tighten the six mounting bolts in the following sequence:

    Tighten: 

    • First pass to 3 N.m (27 lb in).
    • Second pass to 6 N.m (53 lb in).

    5. IMPORTANT: If the insulator nut was removed it must be replaced with a new insulator nut.
  5. Install the front EBCM insulator mounting bolt.

    Tighten:  Tighten the bolt to 14 N.m (10 lb ft).

    6. Fig 2: EBCM Harness Connector & Bracket
    GM707000Courtesy of GENERAL MOTORS CORP.
  6. Install the EBCM/BPMV into the bracket.
  7. Install the two insulator nuts (1).

    Tighten:  Tighten the two insulator nuts to 12 N.m (106 lb in).

  8. Connect the EBCM harness connector.
    IMPORTANT: Both sides of the EBCM harness connector must be engaged with lever before closing.
  9. Turn the ignition switch to the ON position; do NOT start the engine.
  10. Perform the Diagnostic System Check - ABS .
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.