GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Captiva Sport 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Brake Delay Valve Replacement

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.

Removal Procedure
  1. Turn the ignition switch to the OFF position.
  2. Remove the 12V battery. Refer to Battery Replacement .
  3. Without draining the coolant or removing the hoses, remove and position aside the radiator surge tank. Refer to Radiator Surge Tank Replacement .

    4. Object Number: 1878315 Size: SH
  4. Disconnect the brake delay valve electrical connector (1).

    5. Object Number: 1878316 Size: SH
  5. Loosen, but do not remove, the primary brake pipe fitting at the master cylinder pressure sensor mounting block.
  6. Disconnect the primary brake pipe inlet fitting (1) at the brake delay valve.

    7. Rotate the brake pipe aside and cap the brake pipe fitting to prevent brake fluid loss and contamination.


    Object Number: 1878318 Size: SH
  7. Loosen, but do not remove, the secondary brake pipe fitting at the master cylinder.
  8. Disconnect the secondary brake pipe inlet fitting (1) at the brake delay valve.

    9. Rotate the brake pipe aside and cap the brake pipe fitting to prevent brake fluid loss and contamination.


    Object Number: 1878319 Size: SH
  9. Loosen, but do not remove, the primary brake pipe fitting at the brake pressure modulator valve (BPMV).
  10. Disconnect the primary brake pipe outlet fitting (1) at the brake delay valve.

    11. Rotate the brake pipe aside and cap the brake pipe fitting to prevent brake fluid loss and contamination.


    Object Number: 1878321 Size: SH
  11. Loosen, but do not remove, the secondary brake pipe fitting at the BPMV.
  12. Disconnect the secondary brake pipe outlet fitting (1) at the brake delay valve.

    13. Rotate the brake pipe aside and cap the brake pipe fitting to prevent brake fluid loss and contamination.


    Object Number: 1878323 Size: SH
  13. Remove the 2 brake delay valve bolts (1).
  14. Remove the brake delay valve.

Installation Procedure

    Object Number: 1878323 Size: SH
  1. Install the brake delay valve.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the 2 brake delay valve bolts (1).

    3. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1878321 Size: SH
  3. Connect the secondary brake pipe outlet fitting (1) at the brake delay valve.

    4. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).

  4. Tighten the secondary brake pipe fitting at the BPMV.

    5. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).


    Object Number: 1878319 Size: SH
  5. Connect the primary brake pipe outlet fitting (1) at the brake delay valve.

    6. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).

  6. Tighten the primary brake pipe fitting at the BPMV.

    7. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).


    Object Number: 1878318 Size: SH
  7. Connect the secondary brake pipe inlet fitting (1) at the brake delay valve.

    8. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).

  8. Tighten the secondary brake pipe fitting at the master cylinder.

    9. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).


    Object Number: 1878316 Size: SH
  9. Connect the primary brake pipe outlet fitting (1) at the brake delay valve.

    10. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).

  10. Tighten the primary brake pipe fitting at the master cylinder pressure sensor mounting block.

    11. Tighten
    Tighten the fitting to 18 N·m (13 lb ft).


    Object Number: 1878315 Size: SH
  11. Connect the brake delay valve electrical connector (1).
  12. Install the radiator surge tank. Refer to Radiator Surge Tank Replacement .
  13. Install the 12V battery. Refer to Battery Replacement .
  14. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding .