For 1990-2009 cars

### Removal Procedure

Caution: To help avoid personal injury, due to a retained load on the brake modulator, the Gear Tension Relief function of the scan tool must be performed prior to removal of the ABS brake modulator assembly.

1. Use the Scan Tool in order to perform the Gear Tension Relief Sequence.
2. Remove the Battery. Refer to Battery Replacement in Engine Electrical.
3. Remove the Battery tray.
4. Remove the radiator inlet hose. Refer to Radiator Hose Replacement in Engine Cooling.
5. Disconnect the two brake solenoid valve electrical connectors (2).
6. Disconnect the Brake Motor Pack electrical connector (1).
7. Disconnect the wheel cylinder to brake modulator brake pipes from the brake modulator.
8. Disconnect the master cylinder to proportioning valve brake pipes from the proportioning valve.
9. Remove the brake modulator assembly to bracket mounting nut.
10. Remove the brake modulator assembly.

### Installation Procedure

1. Install the brake modulator assembly to the vehicle.

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.

2. Install the brake modulator assembly to bracket mounting nut.

Tighten
Tighten the brake modulator bracket mounting nut to 30 N·m (22 lb ft).

3. Connect the master cylinder to proportioning valve brake pipes to the proportioning valve.

Tighten
Tighten the tube nuts to 24 N·m (18 lb ft).

4. Connect the wheel cylinder to brake modulator brake pipes to the brake modulator.

Tighten
Tighten the tube nuts to 24 N·m (18 lb ft).

5. Connect the Brake Motor Pack electrical connector (1).
6. Connect the two brake solenoid valve electrical connectors (2).
7. Install the radiator inlet hose. Refer to Radiator Hose Replacement in Engine Cooling.
8. Install the Battery tray.
9. Install the Battery to Vehicle. Refer to Battery Replacement in Engine Electrical.
10. Bleed the brake system. Refer to Hydraulic Brake System Bleeding in Brakes.
11. Perform the Diagnostic System Check - ABS .