GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 Vibe - AWD 🢒 Brakes 🢒 Antilock Brake System 🢒 Brake Pressure Modulator Valve Assembly Replacement

Removal Procedure
  1. Disconnect the electronic brake control module (EBCM) harness connector.

    2. Object Number: 819496 Size: SH
  2. Remove the 6 brake pipes from the brake modulator assembly (1).
  3. Plug the brake pipes in order to prevent loss or contamination of brake fluid.
  4. Remove 2 bolts (2) from the brake pressure modulator bracket (3).

    5. Object Number: 819497 Size: SH
  5. Remove nut (1) and the brake pressure modulator assembly and bracket.
  6. Remove 3 nuts and the brake pressure modulator assembly from the bracket.

Installation Procedure

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the brake pressure modulator assembly to the bracket. Secure with 3 nuts.

    2. Tighten
    Tighten the brake modulator assembly nuts to 5 N·m (42 lb in).


    Object Number: 819497 Size: SH
  2. Install the brake pressure modulator assembly and bracket. Secure with nut (1).

    3. Tighten
    Tighten the brake modulator brackect nut to 19 N·m (14 lb ft).


    Object Number: 819496 Size: SH
  3. Install 2 bolts (2) to the brake pressure modulator bracket (3).

    4. Tighten
    Tighten the brake modulator brackect bolts to 19 N·m (14 lb in).

  4. Remove the plugs from brake pipes and connect the brake pipes to the brake modulator assembly (1).

    5. Tighten
    Tighten the brake pipe fittings nuts to 15 N·m (11 lb in).

  5. Connect the EBCM electrical connector.
  6. Bleed the brake system. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.
  7. Perform Diagnostic System Check - ABS .