[Jeff Hail]

If no accumulator ball is sitting on top of the master cylinder you most likely have a Delphi DBC-7 ABS Unit. Its actually one of the better systems and easy bleeding process.

Assuming you have already bled the four lines to each wheel? You can bleed/purge the abs modulator and see how the pedal feels as well as the height. Its a unique system that has a flow chart path for bleeding so you may have to perform the individual channel bleed again at the end of the process.

Next will require a Scan Tool and Pressurized bleeder for top down transfusion.

Normal bleeding procedures can be used to bleed the individual brake lines provided no air has entered the ABS modulator. But if air has entered the modulator, the system will have to be bled using a pressure bleeder and scan tool:

1.Connect the pressure bleeder to the master cylinder reservoir.

2. Turn the ignition on.

3.With bleeder screws closed, pressurize the system to 35 psi. Have a buddy hold a rag on the pressure bleeder cap because if it blows off in process you will need a new paint job.

4.Select the “Automatic Bleed Procedure” on the scan tool. The scan tool will then energize and cycle the ABS solenoids in the BPMV for one minute.

After this, the scan tool will instruct you to bleed each wheel. During this step, the pump runs and the respective release valve cycles for one minute. This is repeated for each wheel. Finally, the scan tool performs a final 20 second cycling of the ABS solenoids to purge any remaining air.

5. Relieve pressure at the bleed tool and remove it from the master cylinder. Then check pedal height and feel to make sure all the air has been removed and the pedal is firm.