GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2002 🢒 Express 🢒 Brakes 🢒 Antilock Brake System 🢒 Electronic Brake Control Module Replacement

Removal Procedure

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

  1. Raise vehicle and properly support.

    2. Object Number: 587788 Size: SH
  2. Remove the three EHCU (1) shield bolts and shield.
  3. Disconnect the four electrical connectors from EBCM.

    4. Object Number: 184173 Size: SH
  4. Remove the three bolts (1) that fasten the EHCU bracket to the frame.

    5. Object Number: 184178 Size: SH
  5. Remove the EHCU from the frame allowing enough clearance to access the EBCM. Be careful not to bend the brake pipes attached to the EHCU.

    6. Object Number: 184187 Size: SH
  6. Remove the four T-25 Torx® bolts (1) that fasten the EBCM to the BPMV.

    7. Remove the EBCM (2) from the BPMV (4). Removal may require a light amount of force.

    Important: Do not use a tool to pry the EBCM or the BPMV. Excessive force will damage the EBCM.

  7. Clean the BPMV with a clean, dry cloth.

Installation Procedure

Important: If the EBCM mounting bolts are corroded or damaged, do not reuse the old mounting bolts. Install new EBCM mounting bolts with the new EBCM.

Important: Do not use RTV or any other type of sealant on the EBCM gasket or mating surfaces.


    Object Number: 184187 Size: SH
  1. Install EBCM (2) to BPMV (4).

    2. Notice: 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.

  2. Install the four EBCM bolts (1).

    3. Tighten
    Tighten the four bolts to 5 N·m (39 lb in) in an X-pattern.

  3. Connect the four electrical connectors to the EBCM.
  4. Install the EHCU Shield.

    5. Tighten
    Tighten the three bolts to 12 N·m (8 lb ft).

  5. Lower the vehicle.
  6. Revise the tire calibration using the Scan Tool .
  7. Return to Diagnostic System Check. Refer to Diagnostic System Check - ABS .