Brake Pressure Modulator Valve Replacement

Fig 1: View Of Brake Pressure Modulator Valve & Components

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
WARNING: Refer to Brake Fluid Irritant Warning . CAUTION: Refer to Brake Fluid Effects on Paint and Electrical Components Caution . CAUTION: 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. Preliminary Procedures Turn the ignition switch to the OFF position. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove any dirt and debris from the area of the brake pressure modulator valve (BPMV) assembly. Disconnect the electronic brake control module (EBCM) electrical connector.
1	BPMV Inlet Brake Pipe Fitting (Qty: 2) CAUTION: Refer to Fastener Caution . TIP: Cap the brake pipe fittings to prevent brake fluid loss and contamination. Tighten With JL4 32 N.m (24 lb ft) Tighten Without JL4 25 N.m (18 lb in)
2	BPMV Outlet Brake Pipe Fitting - Front (Qty: 2) TIP: Cap the brake pipe fittings to prevent brake fluid loss and contamination. Tighten 18 N.m (13 lb ft)
3	BPMV Outlet Brake Pipe Fitting - Rear (Qty: 2) TIP: Cap the brake pipe fittings to prevent brake fluid loss and contamination. Tighten 18 N.m (13 lb ft)
4	BPMV Bracket Bolt (Qty: 3) TIP: It is not necessary to remove the bolts; loosen the bolts and slide the BPMV and bracket assembly toward the front of the vehicle to remove. Tighten 22 N.m (16 lb ft)
5	BPMV Nut (Qty: 2) TIP: If removing the BPMV bracket from the BPMV, only loosen the mounting nuts. Tighten 9 N.m (80 lb in)
6	BPMV Bracket
7	BPMV Assembly Procedure If necessary, remove the EBCM from the BPMV. Refer to Electronic Brake Control Module Replacement . Carefully lift the BPMV upward and release the BPMV from the lower grommet. DO NOT pry on the underside of the BPMV. After the installation is complete, bleed the antilock brake system. Refer to Antilock Brake System Automated Bleed . If installing a new EBCM, program the EBCM. Refer to Electronic Brake Control Module Programming and Setup . Calibrate the brake pressure sensor. Refer to Electronic Brake Control Module Programming and Setup .