Avalanche 2500 2WD V8-8.1L VIN G (2002)
Hydraulic Control Assembly - Antilock Brakes: Service and Repair
W/O JL4
Brake Pressure Modulator Valve (BPMV) Replacement (w/o JL4)
Removal Procedure
Important: The area around the electric hydraulic control unit (EHCU) MUST be free from loose dirt to prevent contamination of disassembled ABS
components.
1. Thoroughly wash all contaminants from around the EHCU.
2. Disconnect the 3 electrical harness connectors from the electronic brake control module (EBCM) (1).
Important: Make sure that brake lines are tagged and kept in order for proper reassembly.
3. Disconnect the brake lines from the brake pressure modulator valve (BPMV) (2).
4. Remove the bolts (4) securing the EHCU mounting bracket (3) to the frame rail (5).
5. Remove the EHCU from the vehicle.
6. Remove the bolts (4) securing the BPMV (1) to the EHCU mounting bracket (3).
7. Disconnect the 2 way ABS pump motor connector.
8. Remove the 4 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 reuse the EBCM mounting bolts. Always install new bolts.
10. Clean the EBCM to BPMV mounting surfaces with a clean cloth.
Installation Procedure
