Electronic Brake Control Module: Service and Repair

Fig. 85 EBCM & APV Valve Assembly Replacement.:

When replacing the EBCM be sure to use the correct replacement EBCM for the system that is being serviced. The 3500 HD uses the ZPRWAL EBCM with the gray electrical connector. All other models use the RWAL EBCM with the black electrical connector. Failure to use the correct EBCM will result in system malfunction.
1. Disconnect battery ground cable.
2. Disconnect EBCM electrical connectors, Fig. 85.
3. Remove EBCM by pulling towards front of vehicle.
4. Reverse procedure to install.