GM Service Manual Online
For 1990-2009 cars only

Object Number: 1848843  Size: MF

Callout

Component Name

Warning: Refer to Brake Dust Warning in the Preface section.

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

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

  1. Turn the ignition switch to the OFF position.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  3. Remove any dirt and debris from the area of the brake pressure modulator valve (BPMV) assembly.
  4. Disconnect the electronic brake control module (EBCM) electrical connector.

1

BPMV Inlet Brake Pipe Fitting (Qty: 2)

Caution: Refer to Fastener Caution in the Preface section.

Procedure

Cap the brake pipe fitting to prevent brake fluid loss and contamination.

Tighten
With JL4: 32 N·m (24 lb ft)

Tighten
Without JL4: 25 N·m (18 lb ft)

2

Brake Pipe Fitting - Front Outlet (Qty: 2)

Procedure

Cap the brake pipe fitting to prevent brake fluid loss and contamination.

Tighten
18 N·m (13 lb ft)

3

Brake Pipe Fitting - Rear Outlet (Qty: 2)

Procedure

Cap the brake pipe fitting 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)

Procedure

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

  1. If necessary, remove the EBCM from the BPMV. Refer to Brake Pressure Modulator Valve Replacement.
  2. Carefully lift the BPMV upward and release the BPMV from the lower grommet. DO NOT pry on the underside of the BPMV.
  3. Bleed the BPMV. Refer to Antilock Brake System Automated Bleed Procedure.
  4. Calibrate the brake pressure sensor. Refer to Electronic Brake Control Module Programming and Setup.