Brake Pressure Modulator Valve Replacement

Brake Pressure Modulator Valve Replacement

Removal Procedure

Caution:
To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.

1. Turn the ignition switch to the OFF position.

2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS7 or LS9) Battery Negative Cable Disconnection and ConnectionBattery Negative Cable Disconnection and Connection (LS3) Battery Negative Cable Disconnection and Connection.

3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (6.2L) Service and RepairAir Cleaner Assembly Replacement (LS9) Service and RepairAir Cleaner Assembly Replacement (7.0L) Service and Repair.

4. Clean the area surrounding the electronic brake control module (EBCM) and the brake pressure modulator valve (BPMV) of and dirt and debris.

5. Disconnect the EBCM electrical connector.





6. Disconnect the left rear brake pipe fitting (1).

Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.

7. Disconnect the right rear brake pipe fitting (2).

Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.





8. Disconnect the right front brake pipe fitting (1).

Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.

Do not force the components apart.

9. Disconnect the left front brake pipe fitting (2).

Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.





10. Disconnect the master cylinder secondary brake pipe fitting (1).

Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid leaks and contamination.

11. Disconnect the master cylinder primary brake pipe fitting (2).

Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid leaks and contamination.





12. Remove the BPMV nuts (1).





13. Remove the EBCM/BPMV module assembly (1) from the bracket.





14. Remove the BPMV insulators (1).

Inspect the insulators for damage and replace, if necessary.





15. Remove the EBCM bolts (1).

Note:
Do not attempt to pry or lever the EBCM from the BPMV.





16. Carefully remove the EBCM (1) from the BPMV.

Do not force the components apart.

17. Clean the sealing surfaces of the EBCM and the BPMV with denatured alcohol and allow to dry.

Installation Procedure





1. Carefully install the EBCM (1) to the BPMV.

Do not force the components together.

Caution:
Refer to Fastener Caution Fastener Caution.





2. Install the EBCM bolts (1) and tighten in a cross pattern to 3 Nm (27 lb in).





3. Install the BPMV insulators (1).





4. Install the EBCM/BPMV module assembly to the bracket.

5. Install the BPMV nuts (1) and tighten to 12 Nm (106 lb in).





6. Connect the master cylinder secondary brake pipe fitting (1) and tighten to 18 Nm (13 lb ft).

7. Connect the master cylinder primary brake pipe fitting (2) and tighten to 18 Nm (13 lb ft).





8. Connect the right front brake pipe fitting (1) and tighten to 18 Nm (13 lb ft).

9. Connect the left front brake pipe fitting (2) and tighten to 18 Nm (13 lb ft).





10. Connect the left rear brake pipe fitting (1) and tighten to 18 Nm (13 lb ft).

11. Connect the right rear brake pipe fitting (2) and tighten to 18 Nm (13 lb ft).

12. Connect the EBCM electrical connector.

13. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (6.2L) Service and RepairAir Cleaner Assembly Replacement (LS9) Service and RepairAir Cleaner Assembly Replacement (7.0L) Service and Repair.

14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS7 or LS9) Battery Negative Cable Disconnection and ConnectionBattery Negative Cable Disconnection and Connection (LS3) Battery Negative Cable Disconnection and Connection.

15. If installing a new EBCM, program the EBCM. Refer to Service Programming System (SPS) Service Programming System (SPS).

16. Perform the Antilock Brake System Automated Bleed Antilock Brake System Automated Bleed.