K 2500 Truck 4WD V8-6.0L VIN U (1999)
Hydraulic Control Assembly - Antilock Brakes: Service and Repair
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Remove negative battery cable.
IMPORTANT: Thoroughly wash all contaminants from around the EHCU. The area around the EHCU MUST be free from loose dirt to prevent
contamination of disassembled ABS components.
2. Disconnect the three electrical harness connectors from the EBCM.
IMPORTANT: Make sure that brake lines are tagged and kept in order for proper reassembly.
1. Electronic Brake Control Module (EBCM) 2. Brake Pressure Modulator Valve (BPMV)
3. Disconnect 5 brake lines from the BPMV.
4. Remove 3 bolts (4) securing the EHCU mounting bracket (3) to the frame rail (5).
5. Remove EHCU (1) from the vehicle.
6. Remove 2 bolts (4) securing the BPMV mounting bracket (3) to the BPMV (1).
7. Disconnect the 2 way ABS pump motor connector.
8. Remove the four T-25 Torx bolts from the EBCM (2).
9. Remove the EBCM (2) from the BPMV (1). Removal may require a light amount of force.
IMPORTANT: Do not use a tool to pry the EBCM or the BPMV. Excessive force will damage the EBCM.
IMPORTANT: Do not reuse the EBCM mounting bolts. Always install new bolts.
10. Clean the EBCM to BPMV mounting surfaces with a clean cloth.
