2001 Chevy Z71 4x4, had to change out all the corroded brake lines.

Since the abs module was left open while we made connections, HOW do I bleed these things.

1. normal and maybe it will work?
2. see if there is an open port/valve or screw on the abs modulator.
3. Rent a scan tool to set the valves open in the modulator?
4 Some other Trick in someones bag that wouldn't mind sharing?

thanks alot