Brake Modulator/Motor Pack Assembly Replacement

WARNING: 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/motor pack assembly.

ABS Brake Modulator/Master Cylinder Assembly:

REMOVE OR DISCONNECT
1. Using scan tool, perform gear tension relief sequence; refer to scan tool operators manual for more information.
2. Air cleaner duct assembly.
3. Two ABS brake solenoid valve electrical connectors.
4. Brake pressure differential warning switch electrical connector.
5. 6-way ABS brake motor pack electrical connector.
6. Five brake pipes (two to master cylinder, three to wheel brakes). Place shop cloth on top of motor pack to catch any dripping fluid. Take care not to allow any brake fluid to enter the bottom of the motor pack or the electrical connectors. Plug open brake pipes to prevent fluid loss and contamination.
7. Bolt attaching front of ABS hydraulic modulator/motor pack assembly to frame rail.
8. ABS hydraulic modulator/motor pack assembly from vehicle.

INSTALL OR CONNECT
1. ABS hydraulic modulator/motor pack assembly in vehicle.
2. Bolt attaching ABS hydraulic modulator/motor pack assembly to frame rail. Tighten Bolt to 9.0 Nm (80 inch lbs.).
3. Five brake pipes to ABS hydraulic modulator/motor pack assembly.
4. 6-way ABS brake motor pack electrical connector.
5. Brake pressure differential warning switch electrical connector.
6. Two ABS brake solenoid valve electrical connectors.
7. Air cleaner duct assembly.
8. Bleed entire brake system. Service and Repair


9. Tighten Two brake combination valve tube nuts to 18 Nm (13 ft. lbs.) and three hydraulic modulator tube nuts to 32 Nm (24 ft. lbs.).