The procedure is to disconnect the negative battery cable, remove the brake modulator shield mounting nuts, remove the brake modulator shield mounting bolt and the brake modulator shield, remove all dirt and debris from the electronic brake control module (EBCM) and the brake pressure modulator valve (BPMV) before loosening or removing any of the components, disconnect the electrical connector from the EBCM, remove and discard the EBCM bolts, remove the EBCM from the BPMV, and clean the sealing surface of the BPMV using denatured alcohol and a clean shop cloth.