For 1990-2009 cars

### Removal Procedure

Caution: For safety reasons, the Brake Pressure Modulator Valve (BPMV) must not be repaired; the complete unit must be replaced. With the exception of the EBCM/EBTCM, no screws may be loosened. If screws are loosened, it will not be possible to get the brake circuits leak-tight and personal injury may result.

1. Turn the ignition switch to the OFF position.
2. Remove the air cleaner assembly and the PCM cover. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
3. Disconnect the following connectors:

• | The EBCM/EBTCM harness connector

• | The BPMV motor ground cable connector

Important: Note the locations of the brake pipes in order to aid in installation.

4. Remove the front master cylinder pipe fittings from BPMV.
5. Remove the top master cylinder brake pipe fittings from the BPMV.
6. Remove the wheel brake pipe fittings from the BPMV.

Notice: When removing the brake pressure modulator valve, protect the vehicle exterior from possible brake fluid spillage. Brake fluid can cause damage to painted surfaces.

Notice: Excessive bending of brake pipes during BPMV removal or installation may cause permanent damage that will require replacement.

7. Clean any brake fluid spillage from the BPMV.
8. Remove the front EBCM/EBTCM bracket mounting bolt (4).
9. Remove the front EBCM/EBTCM bracket from the vehicle (5).
10. Remove the upper BPMV bracket from the frame rail (2).
11. Remove the two upper bracket to BPMV bolts (1).
12. Remove the EBCM/BPMV as an assembly.
13. Remove the four EBCM/EBTCM to BPMV bolts (1).

Caution: Do not pry EBCM/EBTCM. Be careful not to damage seal (if reusing module). If seal is damaged during removal, repair damaged area using GM P/N 123456739 silicone sealer or replace EBCM/EBTCM.

14. Pull rearward in order to separate the EBCM/EBTCM from the BPMV.

### Installation Procedure

1. Install the EBCM/EBTCM to the BPMV.
2. Clean the following surfaces with alcohol:

• | The EBCM/EBTCM seal

• | The BPMV gasket

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.

3. Install the EBCM/EBTCM to BPMV screws (1).

Tighten
Tighten the screws to 6 N·m (53 lb in).

Important: If a new BPMV is being installed, remove the shipping plugs from the valve openings.

4. Install the upper BPMV bracket to the BPMV (2).
5. Install the EBCM/BPMV into the vehicle.
6. Install the two BPMV frame rail bolts.

Tighten
Tighten the bolts to 12 N·m (106 lb in).

7. Install the front EBCM/EBTCM bracket (5).
8. Install the EBCM/EBTCM to BPMV center bolt (4).

Tighten
Tighten the bolt to 14 N·m (10 lb ft).

Important: Use the locations noted during removal.

Caution: Make sure brake pipes are correctly connected to BPMV. If brake pipes are switched by mistake Inlet vs. Outlet, wheel lockup will occur and personal injury may result.

9. Install the wheel brake pipe fittings to the BPMV.

Tighten
Tighten the brake pipe fitting at the BPMV to 16 N·m (12 lb ft).

Important: Use the locations noted during removal.

10. Install the top master cylinder brake pipe fittings to the BPMV.

Tighten
Tighten the brake pipe fitting at the BPMV to 16 N·m (12 lb ft).

Important: Use the locations noted during removal.

11. Install the front master cylinder brake pipe fittings to the BPMV.

Tighten
Tighten the brake pipe fitting at the BPMV to 16 N·m (12 lb ft).

12. Connect the EBCM/EBTCM harness connector.
13. Connect the BPMV motor ground cable connector.
14. Install the air cleaner assembly and the PCM cover. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
15. Fill and bleed the hydraulic brake system. Refer to Master Cylinder Bench Bleeding in Hydraulic Brakes.
16. Turn the ignition switch to the RUN position, engine Off.
17. Perform the Antilock Brake System Automated Bleed Procedure .

Notice: Be sure to reconnect all harness retaining clips that may have been disconnected during the removal procedure in their original positions. Then perform a visual inspections of the entire harness checking to make sure all retaining clips are properly connected.

18. Perform the ABS Diagnostic System Check. Refer to Diagnostic System Check .