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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Repair Instructions >> Brake Pressure Modulator Valve (BPMV) Replacement >> Installation Procedure

Installation Procedure

  1. Install 2 new transfer tubes (12) into the combination valve (11).
  2. Install the combination valve (11) to the BPMV (3).
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the 3 Allen bolts (10) that fasten the combination valve (11) to the BPMV (3).

    Tighten 

    Tighten the 3 Allen bolts to 8 N.m (6 lb ft), then to 16 N.m (12 lb ft).

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

  4. Install the EBCM (2) to the EHCU (3).

    Important:  Do not reuse the EBCM mounting bolts (1). Always install new bolts.

  5. Install the 4 EBCM bolts (1).

    Tighten 

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

  6. Install the BPMV (3) to bracket (6).
    Fig 1: EBCM, BPMV & Components
    G01586345Courtesy of GENERAL MOTORS CORP.
  7. Install the 3 bracket retaining bolts (8) to the BPMV (3).

    Tighten 

    Tighten the 3 bolts to 9 N.m (7 lb ft).

  8. Connect the electrical connectors to the EBCM (2).
  9. Install the EHCU and bracket to the vehicle.
  10. Install the EHCU bracket to vehicle mounting bracket bolts.

    Tighten 

    Tighten the bolts to 12 N.m (9 lb ft).

  11. Install the brake pipes to combination valve (11) and the tube adapters (5).

    Tighten 

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

  12. Connect the electrical connector to the combination valve (11).

    Important:  Verify that the combination valve metering rod is depressed during bleeding.

  13. Bleed the hydraulic brake system. Refer to MANUAL BLEEDING or PRESSURE BLEEDING .
  14. Return to Diagnostic System Check - ABS .
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