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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 805 (ANTILOCK BRAKE SYSTEM WITH TCVS & VSES)REPAIR INSTRUCTIONSELECTRONIC BRAKE CONTROL MODULE (EBCM) REPLACEMENT (W/JL4)INSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Important: 

  • Do not reuse the old mounting screws. Always install new mounting screws with the new EBCM.
  • Do not use RTV or any other type of sealant on the EBCM gasket or mating surfaces.
  1. Install the EBCM to the BPMV.
    2. Fig 1: Installing EBCM To BPMV (w/JL4)
    G01457137Courtesy of GENERAL MOTORS CORP.
  2. Install the new EBCM screws (1).
    NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Tighten 

    Tighten the screws to 5 N.m (39 lb in) in an X-pattern.

    3. Fig 2: Installing New EBCM Screws (w/JL4)
    G01457138Courtesy of GENERAL MOTORS CORP.
  3. Lower the vehicle.
  4. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
  5. Revise the tire calibration using the Scan Tool Tire Size Calibration function.
  6. Return to DIAGNOSTIC STARTING POINT - ANTILOCK BRAKE SYSTEM  .
RENDER: 1.0x

NO RELATED

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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.