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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 724 (ANTILOCK BRAKE SYSTEM, TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEM)REPAIR INSTRUCTIONSBRAKE PRESSURE MODULATOR VALVE (BPMV) REPLACEMENTREMOVAL PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic

Removal Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal Procedure
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Brake Pipes To Master Cylinder
    GM705577Courtesy of GENERAL MOTORS CORP.
  1. Turn the ignition switch to the OFF position.
  2. Disconnect the EBCM harness connector.
  3. Remove the BPMV pump motor ground wire.
  4. Remove the brake pipes from the master cylinder to the BPMV (1, 2), noting the location.
    5. Fig 2: Brake Pipes At BPMV To Front Brake Calipers
    GM705580Courtesy of GENERAL MOTORS CORP.
  5. Remove the brake pipes from the BPMV (1, 2) to the front brake calipers, noting the location.
    6. Fig 3: Brake Pipes At BPMV To Rear Brake Calipers
    GM705585Courtesy of GENERAL MOTORS CORP.
  6. Remove the brake pipes from the BPMV (1, 2) to the rear brake calipers, noting the location.
    7. Fig 4: Electrical Connector To Brake Fluid Pressure Sensor
    GM705573Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the electrical connector from the brake fluid pressure sensor (2).
  8. Remove the two insulator nuts (1).
  9. Remove the EBCM/BPMV from the vehicle as one unit.
    10. Fig 5: EBCM To BPMV
    GM143452Courtesy of GENERAL MOTORS CORP.
  10. Remove the insulator mounting bolt from the EBCM.
  11. Remove the four EBCM to BPMV bolts.
  12. Separate the EBCM from the BPMV by gently pulling apart until separated.
  13. Carefully remove the seal.

    The seal may be reused if it is not cut or damaged.

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.