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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)REMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal 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.
CAUTION: Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

Important:  After installation, calibrate the new EBCM to the tire size that is appropriate to the vehicle.

  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
  2. Raise and suitably support the vehicle.

    Important:  The area around the EHCU MUST be free from loose dirt to prevent contamination of disassembled ABS components.

  3. Thoroughly wash all contaminants from around the EHCU.
  4. Remove the mounting screws (1) that fasten the EBCM (2) to the BPMV (3).
    5. Fig 1: Removing Mounting Screws Fastening EBCM To BPMV (w/JL4)
    G01457135Courtesy of GENERAL MOTORS CORP.
  5. Remove the EBCM from the BPMV. Removal may require a light amount of force.
  6. Remove the EBCM from the vehicle.
    7. Fig 2: Removing EBCM From BPMV (w/JL4)
    G01457136Courtesy of GENERAL MOTORS CORP.
  7. Clean the BPMV to EBCM mounting surfaces with a clean cloth.
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.