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Home >> Chevrolet >> 2005 >> Malibu L4-2.2L VIN F >> Repair and Diagnosis >> Brakes and Traction Control >> Hydraulic System >> Hydraulic Control Assembly - Antilock Brakes >> Service and Repair >> Brake Pressure Modulator Valve (BPMV) Replacement

Brake Pressure Modulator Valve (BPMV) Replacement



Brake Pressure Modulator Valve (BPMV) Replacement

Caution: Refer to Brake Fluid Irritant Caution in Service Precautions.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Service Precautions.

Notice: 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.

Removal Procedure





1. Turn the ignition switch to the OFF position.
2. Clean the brake modulator assembly pipe fitting areas of any accumulated dirt and foreign material.
3. Disconnect the electrical connector from the electronic brake control module (EBCM).
4. Remove the EBCM.





5. Place a shop towel under the brake modulator assembly to catch any brake fluid loss.

6. Disconnect the 4 brake pipes (2) from the brake pressure modulator valve (BPMV).

Important: Prior to disconnecting the brake pipes from the ABS modulator assembly, note the locations of the brake pipes to the valve assembly, to aid during installation.

7. Cap the brake pipe ends to prevent brake fluid loss and contamination.
8. Disconnect the master cylinder brake pipes (1) from the BPMV.
9. Cap the brake pipe ends to prevent brake fluid loss and contamination.
10. Plug the modulator brake pipe openings to prevent brake fluid loss and contamination.





11. Remove the 4 insulator bolts on the brake pressure modulator valve bracket.
12. Remove the brake modulator valve from modulator bracket by pulling straight up.

Installation Procedure

Important: When installing a new brake modulator assembly, do NOT remove the shipping plugs from the pipe ports until after installation into the vehicle.

1. Install the brake modulator valve to the modulator bracket.





2. Install the 4 brake pressure modulator valve bracket insulator bolts.
^ Tighten the bolts to 10 Nm (86 inch lbs.).

Notice: Refer to Fastener Notice in Service Precautions.






3. Remove the caps from the master cylinder brake pipe ends.
4. Connect the master cylinder brake pipes (1) to the modulator assembly, in the same location as removed.
5. Remove the caps from the caliper and wheel cylinder brake pipe ends.
6. Remove the plugs from the caliper and wheel cylinder ports on the modulator assembly.
7. Connect the 4 brake pipes (2) to the modulator valve, in the same location as removed.
8. Tighten all the brake pipe fittings at the BPMV.
^ Tighten the brake pipe fittings to 20 Nm (15 ft. lbs.).
9. Install the EBCM.





10. Connect the electrical connector to the EBCM.

Important: Ensure that the electrical connector is correctly inserted properly into the EBCM prior to swinging the assist locking lever into position. Failure to make a proper connection may cause communication problems with the module.

11. Bleed the hydraulic brake system.

12. Perform the Diagnostic System Check - Vehicle.

Important: Do NOT start the engine, but only turn the ignition switch to the ON position.

13. Observe the feel of the brake pedal after performing the diagnostic system check. If the pedal now feels spongy, air may have been in the secondary circuit of the brake modulator assembly, which may have been introduced into the primary circuit. If the pedal feels spongy, perform the ABS Automated Bleed Procedure.
14. Remove the shop towel and discard into an approved container.
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