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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISBRAKESANTI-LOCK BRAKE SYSTEM, TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMREPAIR INSTRUCTIONSBRAKE PRESSURE MODULATOR VALVE REPLACEMENT (WITH JL4)REMOVAL PROCEDURE
2008 Chevrolet HHR LT, 2.4 P, Automatic

Removal Procedure

2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Removal Procedure
    NOTE: Always connect or disconnect the wiring harness connector from the EBCM/EBTCM with the ignition switch in the OFF position. Failure to observe this precaution could result in damage to the EBCM/EBTCM.
  1. Turn the ignition switch to the OFF position.
  2. Remove the cover from the engine control module (ECM) and the transmission control module (TCM).
  3. Clean the electronic brake control module (EBCM) to brake pressure modulator valve (BPMV) area and the brake pipe fittings of any accumulated dirt and foreign material.
  4. Disconnect the EBCM electrical connector.
    5. Fig 1: Master Cylinder Primary Brake Pipe Fitting
    GM1910350Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the master cylinder primary brake pipe fitting (1).

    Cap the fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.

    6. Fig 2: Master Cylinder Secondary Brake Pipe Fitting
    GM1910352Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the master cylinder secondary brake pipe fitting (1).

    Cap the fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.

    7. Fig 3: LF Brake Pipe Fitting
    GM1910356Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the LF brake pipe fitting (1).

    Cap the fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.

    8. Fig 4: RF Brake Pipe Fitting
    GM1910357Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the RF brake pipe fitting (1).

    Cap the fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.

    9. Fig 5: RR Brake Pipe Fitting
    GM1910362Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the RR brake pipe fitting (1).

    Cap the fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.

    10. Fig 6: LR Brake Pipe Fitting
    GM1910365Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the LR brake pipe fitting (1).

    Cap the fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.

    11. Fig 7: BPMV Bolt
    GM1910368Courtesy of GENERAL MOTORS CORP.
  11. Remove the BPMV bolt (1).
    12. IMPORTANT: Do not remove the mounting pins unless it is necessary to aid in releasing the modulator assembly from the bracket.
  12. Carefully remove the BPMV assembly from the BPMV bracket insulators by pulling straight upward.

    Do not pry against the accumulator covers on the underside of the brake modulator assembly to release the mounting pins from the bracket insulators.

  13. If installing a new BPMV, remove the EBCM. Refer to Electronic Brake Control Module Replacement (Without JL4)  or Electronic Brake Control Module Replacement (With JL4) .
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.