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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Identifying Brake Master Cylinder And Power Brake Booster Assembly
    GM1977735Courtesy of GENERAL MOTORS CORP.
  1. Install the brake master cylinder and power brake booster assembly (1).
  2. CAUTION: Refer to Fastener Caution .
    Fig 2: Identifying Brake Master Cylinder Nuts
    GM1977734Courtesy of GENERAL MOTORS CORP.
  3. Install the brake master cylinder nuts (1).

    Tighten:  Tighten the nuts to 36 N.m (27 lb ft).

  4. Position the wiring harnesses to the retainers, if removed.
  5. Fig 3: Identifying Stoplamp Switch
    GM1977733Courtesy of GENERAL MOTORS CORP.
  6. Simultaneously install the brake master cylinder pushrod and the stoplamp switch (1) to the brake pedal clevis pin.
  7. Fig 4: Identifying Brake Master Cylinder Pushrod Retainer
    GM1977732Courtesy of GENERAL MOTORS CORP.
  8. Install the brake master cylinder pushrod retainer (1).
  9. Fig 5: Identifying Brake Master Cylinder Pushrod Retainer Bolt
    GM1977731Courtesy of GENERAL MOTORS CORP.
  10. Install the brake master cylinder pushrod retainer bolt (1).

    Tighten:  Tighten the bolt to 10 N.m (89 lb in).

  11. Fig 6: Identifying Front Brake Pipes
    GM1977730Courtesy of GENERAL MOTORS CORP.
  12. Install the 2 front brake pipes (1) to the brake master cylinder.

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

  13. Connect the electrical connectors at the brake pressure modulator valve (BPMV).
  14. Connect the brake fluid level sensor electrical connector.
  15. Fig 7: Identifying Rear Brake Pipes
    GM1977729Courtesy of GENERAL MOTORS CORP.
  16. Install the 2 rear brake pipes (1) to the brake master cylinder.

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

  17. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Pressure) or Hydraulic Brake System Bleeding (Manual) .