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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Yukon - 4WD 🢒 Brakes 🢒 Antilock Brake System 🢒 Brake Pressure Modulator Valve Replacement

Brake Pressure Modulator Valve Replacement w/JL4

Removal Procedure

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.


    Object Number: 379478 Size: SH

    Important: The area around the electric hydraulic control unit (EHCU) MUST be free from loose dirt to prevent contamination of disassembled ABS components.

  1. Thoroughly wash all contaminants from around the EHCU.
  2. Disconnect the electrical connector from the electronic brake control module (EBCM) (1).

    3. Important: Make sure that brake lines are tagged and kept in order for proper reassembly.

  3. Disconnect the brake lines from the brake pressure modulator valve (BPMV) (2).
  4. Remove the bolts (4) securing the EHCU mounting bracket (3) to the frame rail (5).
  5. Remove the EHCU from the vehicle.

    6. Object Number: 925574 Size: SH
  6. Remove the bolts (4) securing the BPMV (3) to the EHCU mounting bracket (5).
  7. Remove the bolts (1) from the EBCM (2).
  8. Remove the EBCM (2) from the BPMV (3). Removal may require a light amount of force.

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

    Important: Do not reuse the EBCM mounting bolts. Always install new bolts.

  9. Clean the EBCM to BPMV mounting surfaces with a clean cloth.

Installation Procedure

    Object Number: 925574 Size: SH

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

  1. Install the EBCM (2) onto BPMV (3).

    2. Notice: Refer to Fastener Notice in the Preface section.

    Important: Do not reuse the old mounting bolts. Always install new EBCM bolts with the new BPMV.

  2. Install the EBCM bolts (1).

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

  3. Install the BPMV (3) to EHCU bracket (5).
  4. Install the BPMV to bracket retaining bolts (4).

    5. Tighten
    Tighten the bolts to 9 N·m (7 lb ft).


    Object Number: 379478 Size: SH
  5. Install the EHCU to the vehicle frame (5).
  6. Install the EHCU bracket bolts.

    7. Tighten
    Tighten the EHCU bracket bolts (4) to 25 N·m (18 lb ft).

  7. Connect the electrical connectors to the EBCM (1).

    8. Important: The brake pipes are held in place by a plastic bracket mounted to the frame. Make sure that the brake pipes stay in the correct place for proper reassembly.

  8. Install the brake pipes to the BPMV (2).

    9. Tighten
    Tighten the brake pipe fittings to 25 N·m (18 lb ft).

  9. Bleed the brake system using the ABS Automated Bleed Procedure (W/JL4). Refer to Antilock Brake System Automated Bleed Procedure .

Brake Pressure Modulator Valve Replacement w/o JL4

Removal Procedure

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.


    Object Number: 379478 Size: SH

    Important: The area around the electric hydraulic control unit (EHCU) MUST be free from loose dirt to prevent contamination of disassembled ABS components.

  1. Thoroughly wash all contaminants from around the EHCU.
  2. Disconnect the 3 electrical harness connectors from the electronic brake control module (EBCM) (1).

    3. Important: Make sure that brake lines are tagged and kept in order for proper reassembly.

  3. Disconnect the brake lines from the brake pressure modulator valve (BPMV) (2).
  4. Remove the bolts (4) securing the EHCU mounting bracket (3) to the frame rail (5).
  5. Remove the EHCU from the vehicle.

    6. Object Number: 379484 Size: SH
  6. Remove the bolts (4) securing the BPMV (1) to the EHCU mounting bracket (3) .
  7. Disconnect the 2 way ABS pump motor connector.
  8. Remove the 4 T-25 TORX® bolts from the EBCM (2).
  9. Remove the EBCM (2) from the BPMV (1). Removal may require a light amount of force.

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

    Important: Do not reuse the EBCM mounting bolts. Always install new bolts.

  10. Clean the EBCM to BPMV mounting surfaces with a clean cloth.

Installation Procedure

    Object Number: 379484 Size: SH

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

  1. Install the EBCM (2) onto BPMV (1).

    2. Notice: Refer to Fastener Notice in the Preface section.

    Important: Do not reuse the old mounting bolts. Always install new EBCM bolts with the new BPMV.

  2. Install the four EBCM bolts.

    3. Tighten
    Tighten the 4 bolts to 5 N·m (39 lb in) in an X-pattern.

  3. Connect the 2 way ABS pump motor connector to the EBCM.
  4. Install the BPMV (1) to EHCU bracket (3).
  5. Install the BPMV (1) to bracket retaining bolts (4).

    6. Tighten
    Tighten the bolts to 9 N·m (7 lb ft).


    Object Number: 379478 Size: SH
  6. Install the EHCU to the vehicle frame (5).

    7. Tighten
    Tighten the three EHCU bracket bolts (4) to 25 N·m (18 lb ft).

  7. Connect the 2 electrical harness connectors to the EBCM (1).

    8. Important: The brake pipes are held in place by a plastic bracket mounted to the frame. Make sure that the brake pipes stay in the correct place for proper reassembly.

  8. Install the 5 brake pipes to the BPMV (6).

    9. Tighten
    Tighten the brake pipe fittings to 30 N·m (22 lb ft).

  9. Bleed the brake system. Refer to Hydraulic Brake System Bleeding .
  10. Bleed the brake system. Refer to Antilock Brake System Automated Bleed Procedure .