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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 591 (Anti-Lock Brake System) >> Repair Instructions >> Brake Pressure Modulator Valve (BPMV) Replacement (w/JL4) >> Removal Procedure

Removal Procedure

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  1. Thoroughly wash all contaminants from around the EHCU.
  2. Disconnect the 2 electrical harness connectors from the Electronic Brake Control Module (EBCM) (1).
    3. Fig 1: Removal Of EBCM Electrical Harness
    G01664060Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the electrical connector from the pressure accumulator switch.
    4. Fig 2: Removal Of Accumulator Switch Electrical Connector
    G01664061Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the electrical connector from the brake fluid pressure sensor.
    NOTE: Make sure that brake lines are tagged and kept in order for proper reassembly.
  5. Disconnect the brake lines from the Brake Pressure Modulator Valve (BPMV) (2).
  6. Remove the bolts (4) securing the EHCU mounting bracket (3) to the frame rail (5).
  7. Remove the EHCU from the vehicle.
    8. Fig 3: Removal Of BPMV & EHCU From Frame Rail
    G01664062Courtesy of GENERAL MOTORS CORP.
  8. Remove the bolts (4) securing the BPMV (1) to the EHCU mounting bracket (3).
  9. Remove the 4 T-25 TORX® bolts from the EBCM (2).
  10. Remove the EBCM (2) from the BPMV (1). Removal may require a light amount of force.
    11. Fig 4: Removal Of EBCM From The BPMV
    G01664063Courtesy of GENERAL MOTORS CORP.
  11. Remove the accumulator switch.
    12. Fig 5: Removal Of Accumulator Switch
    G01664064Courtesy of GENERAL MOTORS CORP.
  12. Remove the brake fluid sensor (2).
    NOTE: Do not reuse the EBCM mounting bolts. Always install new bolts.
  13. Clean the EBCM to BPMV mounting surfaces with a clean cloth.
    14. Fig 6: Removal Of Brake Fluid Pressure Sensor
    G01664065Courtesy of GENERAL MOTORS CORP.
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