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Home >> Chevrolet >> 2003 >> Impala LS >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Brake Pressure Modulator Valve (BPMV) Replacement >> Installation Procedure

Installation Procedure

    Fig 1: BPMV, Mounting Bracket & Bolts
    GM307967Courtesy of GENERAL MOTORS CORP.
  1. Install EBCM onto the BPMV (1) if replacing the BPMV only. Refer to Electronic Brake Control Module Replacement .
  2. Install BPMV and EBCM as an assembly (1) to the mounting bracket (2).
  3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the 4 bolts (3) that connects the BPMV assembly (1) to the mounting bracket (2).

    Tighten:  Tighten the 4 bolts (3) that connect the BPMV (1) to the mounting bracket (2) to 10 N.m (89 lb in).

  5. Fig 2: BPMV Mounting Bracket & EBCM Assembly
    GM394422Courtesy of GENERAL MOTORS CORP.
  6. Install the BPMV bracket (4) to the strut tower.
  7. Install the 1 bolt and 3 nuts that attach the BPMV mounting bracket (4) to the strut tower.

    Tighten: 

    • Tighten the lower 2 BPMV mounting bracket nuts (3) and bolt to 10 N.m (84 lb in).
    • Tighten the top nut (1) for BPMV mounting bracket (4) to strut tower to 3 N.m (27 lb in).

  8. Fig 3: Master Cylinder Brake Pipes At BPMV
    GM385479Courtesy of GENERAL MOTORS CORP.
    CAUTION: Make sure brake pipes are correctly connected to brake pressure modulator valve. If brake pipes are switched by mistake, wheel lockup will occur and personal injury may result. The only two ways this condition can be detected are by using a Scan Tool or by doing an Antilock stop.
    IMPORTANT: If a new BPMV is being installed, remove the shipping plugs from the valve openings during the next few steps when ready.
  9. Install the master cylinder brake pipes (2) into the BPMV (4).

    Tighten:  Tighten the master cylinder brake pipe fittings to 24 N.m (18 lb ft).

  10. Fig 4: Brake Pipes At BPMV
    GM385481Courtesy of GENERAL MOTORS CORP.
  11. Install the brake pipes (1) on the BPMV (2).

    Tighten:  Tighten all 4 brake pipe fittings to 24 N.m (18 lb ft).

  12. Reconnect the ground strap between the EBCM assembly and the chassis.
  13. Fig 5: Identifying Connector Position Assurance (CPA) Locking Tab And Connector Sliding Cover Lock Tab
    GM393786Courtesy of GENERAL MOTORS CORP.
  14. Connect the EBCM harness connector.
  15. Push down lock tab (1) and then move sliding connector cover (2) back in home position to lock.
  16. Insert red locking tab back in place.
  17. Reinstall the cruise control module.
  18. When all procedures have been completed, the automated ABS bleed procedure is required. Refer to ABS Automated Bleed Procedure .