Removal Procedure

Fig 1: View Of EBCM Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Turn the ignition switch to the OFF position.
Clean the brake modulator assembly pipe fitting areas of any accumulated dirt and foreign material.
Disconnect the electrical connector from the electronic brake control module (EBCM).

Fig 2: View Of Wheel & Master Cylinder Brake Pipes
Courtesy of GENERAL MOTORS CORP.
Place a shop towel under the brake modulator assembly to catch any brake fluid loss.
IMPORTANT: Prior to disconnecting the brake pipes from the ABS modulator assembly, note the locations of the brake pipes to the valve assembly, to aid during installation.
Disconnect the caliper and wheel cylinder brake pipes (1) from the brake pressure modulator valve (BPMV).
Cap the brake pipe ends to prevent brake fluid loss and contamination.
Disconnect the master cylinder brake pipes (2) from the BPMV.
Cap the brake pipe ends to prevent brake fluid loss and contamination.
Plug the modulator brake pipe openings to prevent brake fluid loss and contamination.

Fig 3: Locating Insulator Nuts
Courtesy of GENERAL MOTORS CORP.
Loosen the 2 insulator nuts (1) on the brake pressure modulator valve assembly.
Remove the brake modulator assembly from modulator bracket by pulling straight up.